We're dividing 73403 by 57 
We're looking to find how many times 57 goes into 73403.

Step 1:
If we divide 7 by 57, we get 0 and a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Fetch the next digit (3) from the dividend, attach it to 7 and continue: 73 / 57

Advancing to step 2:
57 goes into 73 1 times with a remainder of 16.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 16 after subtracting 57 from 73.
Append the next digit (4) from the dividend to 16 and continue with: 164 / 57

Going ahead to step 3:
If we divide 164 by 57, we get 2 and a remainder of 50.
Use 2 as the next digit of our solution. 
Result so far: 12.0
If we take 114 away from 164, we end up with 50.
Bring next digit (0) of the dividend behind the 50 and repeat the process: 500 / 57

Advancing to step 4:
If we divide 500 by 57, we get 8 and a remainder of 44.
The next digit of our result is 8. 
Result so far: 128.0
Subtracting 456 from 500 leaves us with 44.
Append the next digit (3) from the dividend to 44 and continue with: 443 / 57

Step 5:
When dividing 443 by 57, we get 7 with a remainder of 44.
Put 7 as the next digit of the answer. 
Result so far: 1287.0
The remainder is 44 after subtracting 399 from 443.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Advancing to step 6:
The number 57 fits into 440 7 times, leaving a remainder of 41.
Record the quotient 7 as the next digit in the result. 
Result so far: 1287.7
Subtract 399 from 440 to get 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

On to step 7:
57 goes into 410 7 times with a remainder of 11.
Use 7 as the next digit of our solution. 
Result so far: 1287.77
Deduct 399 from 410 and we're left with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

The final result is 1287.77 with a remainder of 0.011.