38858 ÷ 3 = 12952 R2
We're going to perform division on 38858 with 3 as the divisor.

Step 1:
3 goes into 3 1 times with a remainder of 0.
Write down 1 as next digit of of the result. 
Result so far: 1
Subtract 3 from 3 to get 0.
Bring next digit (8) of the dividend behind the 0 and repeat the process: 8 / 3

Step 2:
3 goes into 8 2 times with a remainder of 2.
Write down 2 as next digit of of the result. 
Result so far: 12
Subtract 6 from 8 to get 2.
Bring next digit (8) of the dividend behind the 2 and repeat the process: 28 / 3

Step 3:
3 goes into 28 9 times with a remainder of 1.
Write down 9 as next digit of of the result. 
Result so far: 129
Subtract 27 from 28 to get 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 3

Step 4:
3 goes into 15 5 times with a remainder of 0.
Write down 5 as next digit of of the result. 
Result so far: 1295
Subtract 15 from 15 to get 0.
Bring next digit (8) of the dividend behind the 0 and repeat the process: 8 / 3

Step 5:
3 goes into 8 2 times with a remainder of 2.
Write down 2 as next digit of of the result. 
Result so far: 12952
Subtract 6 from 8 to get 2.

The final result is 12952 with a remainder of 2.