Overview: 3 questions will be solved this time.Among them
           ☆1 arithmetic calculations
           ☆1 fraction calculations
           ☆1 integer calculations

[1/3 Formula]
    Work: Calculate the value of equation 1/50-1/25/27 .
    Question type: Mathematical calculation
    Solution:
          1/50-1/25/27
        =0.02-1/25/27
        =0.02-0.04/27
        =0.02-0.001481
        =0.018519
    Answer:1/50-1/25/27=0.018519
[ 2/3 Fraction calculation ]
    Question type: Fractional subtraction
    Original question: 1/18-1/27
    Solution:

1 18

－

1 27

    Divide two fractions with defferent denominators:The denominators of two fractions are 18 and 27 respectively,their least common multiple is 54
    Divide the least common multiple 54 by the denominator 18 of the minuend to get 3
    Multiply the numerator 1 and denominator 18 of the subtracted number by 3
    Then divide the least common multiple 54 by the denominator 27 of the subtraction to get 2
    Multiply the subtracted numerator 1 and denominator 27 by 2 at the same time

=

3 54

－

2 54

Calculation result:

=

1 54

[3/3 Integer column vertical calculation]
    Question type: Integer division
    Original question: 1/54
    Solution:
    1/54 = 0 ··· ··· 1
    Column vertical calculation:

			0
5	4	丿	1
			0
			1

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