87870 ÷ 7 = 12552 R6
Let's divide 87870 by 7.

Step 1:
7 goes into 8 1 times with a remainder of 1.
Write down 1 as next digit of of the result. 
Result so far: 1
Subtract 7 from 8 to get 1.
Bring next digit (7) of the dividend behind the 1 and repeat the process: 17 / 7

Step 2:
7 goes into 17 2 times with a remainder of 3.
Write down 2 as next digit of of the result. 
Result so far: 12
Subtract 14 from 17 to get 3.
Bring next digit (8) of the dividend behind the 3 and repeat the process: 38 / 7

Step 3:
7 goes into 38 5 times with a remainder of 3.
Write down 5 as next digit of of the result. 
Result so far: 125
Subtract 35 from 38 to get 3.
Bring next digit (7) of the dividend behind the 3 and repeat the process: 37 / 7

Step 4:
7 goes into 37 5 times with a remainder of 2.
Write down 5 as next digit of of the result. 
Result so far: 1255
Subtract 35 from 37 to get 2.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 7

Step 5:
7 goes into 20 2 times with a remainder of 6.
Write down 2 as next digit of of the result. 
Result so far: 12552
Subtract 14 from 20 to get 6.

The final result is 12552 with a remainder of 6.