73712 ÷ 51 
We want to figure out the number of times 73712 can be divided by 51.

Advancing to step 1:
7 divided by 51 is 0 with 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.
Append the next digit (3) from the dividend to 7 and continue with: 73 / 51

Advancing to step 2:
When dividing 73 by 51, we get 1 with a remainder of 22.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 51 from 73 and we're left with 22.
Grab the next digit (7) from the dividend, add it to 22, then carry on: 227 / 51

Advancing to step 3:
The number 51 fits into 227 4 times, leaving a remainder of 23.
Write down 4 as next digit of the result. 
Result so far: 14.0
If we take 204 away from 227, we end up with 23.
Take the next digit (1) from the dividend and append it to 23, then repeat: 231 / 51

Step 4:
The number 51 fits into 231 4 times, leaving a remainder of 27.
Put 4 as the next digit of the answer. 
Result so far: 144.0
The remainder is 27 after subtracting 204 from 231.
Bring next digit (2) of the dividend behind the 27 and repeat the process: 272 / 51

Moving on to step 5:
51 can be fit into 272 5 times, resulting in a remainder of 17.
Put 5 as the next digit of the answer. 
Result so far: 1445.0
If we take 255 away from 272, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 6:
170 divided by 51 is 3 with a remainder of 17.
The next digit of our result is 3. 
Result so far: 1445.3
The remainder is 17 after subtracting 153 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Moving on to step 7:
If we divide 170 by 51, we get 3 and a remainder of 17.
Use 3 as the next digit of our solution. 
Result so far: 1445.33
If we take 153 away from 170, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

The final result is 1445.33 with a remainder of 0.017.