86426 ÷ 7 = 12346 R4
No problem, we've got 86426 and 7 for the division.

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 (6) of the dividend behind the 1 and repeat the process: 16 / 7

Step 2:
7 goes into 16 2 times with a remainder of 2.
Write down 2 as next digit of of the result. 
Result so far: 12
Subtract 14 from 16 to get 2.
Bring next digit (4) of the dividend behind the 2 and repeat the process: 24 / 7

Step 3:
7 goes into 24 3 times with a remainder of 3.
Write down 3 as next digit of of the result. 
Result so far: 123
Subtract 21 from 24 to get 3.
Bring next digit (2) of the dividend behind the 3 and repeat the process: 32 / 7

Step 4:
7 goes into 32 4 times with a remainder of 4.
Write down 4 as next digit of of the result. 
Result so far: 1234
Subtract 28 from 32 to get 4.
Bring next digit (6) of the dividend behind the 4 and repeat the process: 46 / 7

Step 5:
7 goes into 46 6 times with a remainder of 4.
Write down 6 as next digit of of the result. 
Result so far: 12346
Subtract 42 from 46 to get 4.

The final result is 12346 with a remainder of 4.