3868 ÷ 9 = 429 R7
Let's divide 3868 by 9.

Step 1:
9 goes into 3 0 times with a remainder of 3.
Write down 0 as next digit of of the result. 
Result so far: 0
Subtract 0 from 3 to get 3.
Bring next digit (8) of the dividend behind the 3 and repeat the process: 38 / 9

Step 2:
9 goes into 38 4 times with a remainder of 2.
Write down 4 as next digit of of the result. 
Result so far: 4
Subtract 36 from 38 to get 2.
Bring next digit (6) of the dividend behind the 2 and repeat the process: 26 / 9

Step 3:
9 goes into 26 2 times with a remainder of 8.
Write down 2 as next digit of of the result. 
Result so far: 42
Subtract 18 from 26 to get 8.
Bring next digit (8) of the dividend behind the 8 and repeat the process: 88 / 9

Step 4:
9 goes into 88 9 times with a remainder of 7.
Write down 9 as next digit of of the result. 
Result so far: 429
Subtract 81 from 88 to get 7.

The final result is 429 with a remainder of 7.