51412 ÷ 9 = 5712 R4
Let's divide 51412 by 9.

Step 1:
9 goes into 5 0 times with a remainder of 5.
Write down 0 as next digit of of the result. 
Result so far: 0
Subtract 0 from 5 to get 5.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 9

Step 2:
9 goes into 51 5 times with a remainder of 6.
Write down 5 as next digit of of the result. 
Result so far: 5
Subtract 45 from 51 to get 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 9

Step 3:
9 goes into 64 7 times with a remainder of 1.
Write down 7 as next digit of of the result. 
Result so far: 57
Subtract 63 from 64 to get 1.
Bring next digit (1) of the dividend behind the 1 and repeat the process: 11 / 9

Step 4:
9 goes into 11 1 times with a remainder of 2.
Write down 1 as next digit of of the result. 
Result so far: 571
Subtract 9 from 11 to get 2.
Bring next digit (2) of the dividend behind the 2 and repeat the process: 22 / 9

Step 5:
9 goes into 22 2 times with a remainder of 4.
Write down 2 as next digit of of the result. 
Result so far: 5712
Subtract 18 from 22 to get 4.

The final result is 5712 with a remainder of 4.