42358 ÷ 8 = 5294 R6
We're going to perform division on 42358 with 8 as the divisor.

Step 1:
8 goes into 4 0 times with a remainder of 4.
Write down 0 as next digit of of the result. 
Result so far: 0
Subtract 0 from 4 to get 4.
Bring next digit (2) of the dividend behind the 4 and repeat the process: 42 / 8

Step 2:
8 goes into 42 5 times with a remainder of 2.
Write down 5 as next digit of of the result. 
Result so far: 5
Subtract 40 from 42 to get 2.
Bring next digit (3) of the dividend behind the 2 and repeat the process: 23 / 8

Step 3:
8 goes into 23 2 times with a remainder of 7.
Write down 2 as next digit of of the result. 
Result so far: 52
Subtract 16 from 23 to get 7.
Bring next digit (5) of the dividend behind the 7 and repeat the process: 75 / 8

Step 4:
8 goes into 75 9 times with a remainder of 3.
Write down 9 as next digit of of the result. 
Result so far: 529
Subtract 72 from 75 to get 3.
Bring next digit (8) of the dividend behind the 3 and repeat the process: 38 / 8

Step 5:
8 goes into 38 4 times with a remainder of 6.
Write down 4 as next digit of of the result. 
Result so far: 5294
Subtract 32 from 38 to get 6.

The final result is 5294 with a remainder of 6.