78007 ÷ 7 = 11143 R6
We're going to perform division on 78007 with 7 as the divisor.

Step 1:
7 goes into 7 1 times with a remainder of 0.
Write down 1 as next digit of of the result. 
Result so far: 1
Subtract 7 from 7 to get 0.
Bring next digit (8) of the dividend behind the 0 and repeat the process: 8 / 7

Step 2:
7 goes into 8 1 times with a remainder of 1.
Write down 1 as next digit of of the result. 
Result so far: 11
Subtract 7 from 8 to get 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 7

Step 3:
7 goes into 10 1 times with a remainder of 3.
Write down 1 as next digit of of the result. 
Result so far: 111
Subtract 7 from 10 to get 3.
Bring next digit (0) of the dividend behind the 3 and repeat the process: 30 / 7

Step 4:
7 goes into 30 4 times with a remainder of 2.
Write down 4 as next digit of of the result. 
Result so far: 1114
Subtract 28 from 30 to get 2.
Bring next digit (7) of the dividend behind the 2 and repeat the process: 27 / 7

Step 5:
7 goes into 27 3 times with a remainder of 6.
Write down 3 as next digit of of the result. 
Result so far: 11143
Subtract 21 from 27 to get 6.

The final result is 11143 with a remainder of 6.