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It supports mathematical functions (including trigonometric functions).
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（8×3.93+19×2.35+14×17.85+16.2×7.49+7.6×0.69+7.5×1.09+17.9×5.25）/38.65=
（22×3.93+10.8×2.35+12.9×17.85+13.8×7.49+31×0.69+31.7×1.09+15.5×5.25）/38.65=
（22×7.55+10.8×0.43+12.9×16.47+13.8×8.28+31.7×0.17+13.8×6.03）/38.93=
17.8×7.55+19×0.43+17.8×（8.48-0.43-7.55）+（17.8-9.8）×（16.47-8.48+0.43+7.55）+（17.9-9.8）×8.28+（19.2-9.8）×0.17+（17.9-9.8）×6.03
（0.575×7.55+0.68×0.43+0.7×16.47+0.65×8.28）/32.73=
（0.575×7.55+0.68×0.43+0.7×16.47+0.65×8.28）/32.73=
348.13×(tan(45+15.2/2)*tan(45+15.2/2))+2×13.24×tan(45+15.2/2)=
348.13×(tan(45-15.2/2)*tan(45-15.2/2))-2×13.24×tan(45-15.2/2)=
（8×7.55+19×0.43+14×16.47+16.2×8.28）/32.73=
（22×7.55+10.8×0.43+12.9×16.47+13.8×8.28）/32.73=
343.74×(tan(45+14.52/2)*tan(45+14.52/2))+2×13.98×tan（45+14.52/2）=
343.74×(tan(45-14.52/2)*tan(45-14.52/2))-2×13.98×tan（45-14.52/2）=
343.74×(tan(45-14.52/2)*tan(45-14.52/2))+2×13.98×tan（45-14.52/2）=
245.02+209.5+20=
212.23+209.5+20=
395.195×(tan(45+14.85/2)*tan(45+14.85/2))+2×14.12×tan（45+14.85/2）=
395.195×(tan(45-14.85/2)*tan(45-14.85/2))-2×14.12×tan（45-14.85/2）=
395.195×(tan(45-14.85/2)*tan(45-14.85/2))-2×14.12×tan（45-14.85/2）=
17.8×3.93+19×2.35+17.8×（8.11-2.35-3.93）+（17.8-9.8）×（17.85-8.11+2.35+3.93）+（17.9-9.8）×7.49+（19.1-9.8）×0.69+（19.2-9.8）×1.09+（17.9-9.8）×5.25
17.8×3.93+19×2.35+17.8×（8.11-2.35-3.93）+（17.8-9.8）×（17.85-8.11+2.35+3.93）+（17.9-9.8）×7.49+（19.1-9.8）×0.69+（19.2-9.8）×0.14
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（22×3.93+10.8×2.35+12.9×17.85+13.8×7.49+31×0.69+31.7×1.09+15.5×5.25）/38.65=
（22×7.55+10.8×0.43+12.9×16.47+13.8×8.28+31.7×0.17+13.8×6.03）/38.93=
17.8×7.55+19×0.43+17.8×（8.48-0.43-7.55）+（17.8-9.8）×（16.47-8.48+0.43+7.55）+（17.9-9.8）×8.28+（19.2-9.8）×0.17+（17.9-9.8）×6.03
（0.575×7.55+0.68×0.43+0.7×16.47+0.65×8.28）/32.73=
（0.575×7.55+0.68×0.43+0.7×16.47+0.65×8.28）/32.73=
348.13×(tan(45+15.2/2)*tan(45+15.2/2))+2×13.24×tan(45+15.2/2)=
348.13×(tan(45-15.2/2)*tan(45-15.2/2))-2×13.24×tan(45-15.2/2)=
（8×7.55+19×0.43+14×16.47+16.2×8.28）/32.73=
（22×7.55+10.8×0.43+12.9×16.47+13.8×8.28）/32.73=
343.74×(tan(45+14.52/2)*tan(45+14.52/2))+2×13.98×tan（45+14.52/2）=
343.74×(tan(45-14.52/2)*tan(45-14.52/2))-2×13.98×tan（45-14.52/2）=
343.74×(tan(45-14.52/2)*tan(45-14.52/2))+2×13.98×tan（45-14.52/2）=
245.02+209.5+20=
212.23+209.5+20=
395.195×(tan(45+14.85/2)*tan(45+14.85/2))+2×14.12×tan（45+14.85/2）=
395.195×(tan(45-14.85/2)*tan(45-14.85/2))-2×14.12×tan（45-14.85/2）=
395.195×(tan(45-14.85/2)*tan(45-14.85/2))-2×14.12×tan（45-14.85/2）=
17.8×3.93+19×2.35+17.8×（8.11-2.35-3.93）+（17.8-9.8）×（17.85-8.11+2.35+3.93）+（17.9-9.8）×7.49+（19.1-9.8）×0.69+（19.2-9.8）×1.09+（17.9-9.8）×5.25
17.8×3.93+19×2.35+17.8×（8.11-2.35-3.93）+（17.8-9.8）×（17.85-8.11+2.35+3.93）+（17.9-9.8）×7.49+（19.1-9.8）×0.69+（19.2-9.8）×0.14
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