We divide 52121712 by 392
We want to figure out the number of times 52121712 can be divided by 392.

Advancing to step 1:
392 can be fit into 5 0 times, resulting in a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Fetch the next digit (2) from the dividend, attach it to 5 and continue: 52 / 392

Going ahead to step 2:
When dividing 52 by 392, we get 0 with a remainder of 52.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 52 and we're left with 52.
Include the next digit (1) from the dividend after 52, then repeat: 521 / 392

Going ahead to step 3:
When dividing 521 by 392, we get 1 with a remainder of 129.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 392 from 521 to get 129.
Take the next digit (2) from the dividend and append it to 129, then repeat: 1292 / 392

Moving on to step 4:
1292 divided by 392 is 3 with a remainder of 116.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
Subtract 1176 from 1292 to get 116.
Take the next digit (1) from the dividend and append it to 116, then repeat: 1161 / 392

Step 5:
1161 divided by 392 is 2 with a remainder of 377.
The next digit of our result is 2. 
Result so far: 132.0
If we subtract 784 from 1161, we get 377.
Take the next digit (7) from the dividend and append it to 377, then repeat: 3777 / 392

On to step 6:
392 can be fit into 3777 9 times, resulting in a remainder of 249.
Record the quotient 9 as the next digit in the result. 
Result so far: 1329.0
Subtracting 3528 from 3777 leaves us with 249.
Fetch the next digit (1) from the dividend, attach it to 249 and continue: 2491 / 392

On to step 7:
392 can be fit into 2491 6 times, resulting in a remainder of 139.
The next digit of our result is 6. 
Result so far: 13296.0
The remainder is 139 after subtracting 2352 from 2491.
Append the next digit (2) from the dividend to 139 and continue with: 1392 / 392

Advancing to step 8:
The number 392 fits into 1392 3 times, leaving a remainder of 216.
The next digit of our result is 3. 
Result so far: 132963.0
Subtracting 1176 from 1392 leaves us with 216.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

Going ahead to step 9:
When dividing 2160 by 392, we get 5 with a remainder of 200.
Write down 5 as next digit of the result. 
Result so far: 132963.5
If we subtract 1960 from 2160, we get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Going ahead to step 10:
The number 392 fits into 2000 5 times, leaving a remainder of 40.
Use 5 as the next digit of our solution. 
Result so far: 132963.55
If we subtract 1960 from 2000, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The final result is 132963.55 with a remainder of 0.04.