In order to calculate the division of 5÷7, you proceed as follow:
50 7 You add a 0 to number 5, and in the cocient you add 0,
49 0,71 then, you consider the division as 50÷7
10 each time you add a zero, you add a decimal place
7
3
you can continue adding zeros to the remaining of the division, and so, adding decimal numbers to the cocient.
In this casce, bbut taking into account only two decimal places, you obtain for the division, the result 0,71