When Xiao Liang calculates a number divided by 7, he mistakenly regards it as multiplying by 7, and the result is 7 / 8?

When Xiao Liang calculates a number divided by 7, he mistakenly regards it as multiplying by 7, and the result is 7 / 8?

1 / 56. X * 7 = 7 / 8, so this number is equal to 1 / 8. Divide by 7 to get 1 / 56

Xiaoying divided a number by 5 as a multiplication of 5, the result she calculated the answer is five out of nine, asked the correct answer should be how much

The original number is 1 / 9
The correct answer is 1 / 45

When Xiaohong starts to do her homework at more than 7 o'clock in the evening, the hour hand and the minute hand coincide. When she finishes at more than 10 o'clock, the hour hand and the minute hand coincide again. How many minutes did Xiaohong spend doing her homework

Time to start doing homework: 35 / (1-1 / 12) = 35 * 12 / 11 = 38 and 2 / 11
Time to finish homework: 50 / (1-1 / 12) = 50 * 12 / 11 = 54 and 6 / 11
How many minutes did Xiao Hong spend doing her homework: 3 + 54 6 / 11-38 2 / 11 = 3 hours 16 4 / 11 minutes