1407 ÷ 3 = 469 R0
We're going to perform division on 1407 with 3 as the divisor.

Step 1:
3 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of of the result. 
Result so far: 0
Subtract 0 from 1 to get 1.
Bring next digit (4) of the dividend behind the 1 and repeat the process: 14 / 3

Step 2:
3 goes into 14 4 times with a remainder of 2.
Write down 4 as next digit of of the result. 
Result so far: 4
Subtract 12 from 14 to get 2.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 3

Step 3:
3 goes into 20 6 times with a remainder of 2.
Write down 6 as next digit of of the result. 
Result so far: 46
Subtract 18 from 20 to get 2.
Bring next digit (7) of the dividend behind the 2 and repeat the process: 27 / 3

Step 4:
3 goes into 27 9 times with a remainder of 0.
Write down 9 as next digit of of the result. 
Result so far: 469
Subtract 27 from 27 to get 0.

The final result is 469 with a remainder of 0.