Let's divide 39952556 by 521
We want to divide 39952556 by 521.

Step 1:
If we divide 3 by 521, we get 0 and a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 521

On to step 2:
521 goes into 39 0 times with a remainder of 39.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 39, we get 39.
Append the next digit (9) from the dividend to 39 and continue with: 399 / 521

On to step 3:
If we divide 399 by 521, we get 0 and a remainder of 399.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 399 and we're left with 399.
Fetch the next digit (5) from the dividend, attach it to 399 and continue: 3995 / 521

Going ahead to step 4:
521 goes into 3995 7 times with a remainder of 348.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Subtracting 3647 from 3995 leaves us with 348.
Append the next digit (2) from the dividend to 348 and continue with: 3482 / 521

Let's proceed to step 5:
When dividing 3482 by 521, we get 6 with a remainder of 356.
The next digit of our result is 6. 
Result so far: 76.0
The remainder is 356 after subtracting 3126 from 3482.
Fetch the next digit (5) from the dividend, attach it to 356 and continue: 3565 / 521

Going ahead to step 6:
If we divide 3565 by 521, we get 6 and a remainder of 439.
Use 6 as the next digit of our solution. 
Result so far: 766.0
If we subtract 3126 from 3565, we get 439.
Append the next digit (5) from the dividend to 439 and continue with: 4395 / 521

Step 7:
4395 divided by 521 is 8 with a remainder of 227.
Put 8 as the next digit of the answer. 
Result so far: 7668.0
Subtracting 4168 from 4395 leaves us with 227.
Take the next digit (6) from the dividend and append it to 227, then repeat: 2276 / 521

On to step 8:
2276 divided by 521 is 4 with a remainder of 192.
The number 4 becomes the next digit in our result. 
Result so far: 76684.0
Subtracting 2084 from 2276 leaves us with 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

Moving on to step 9:
When dividing 1920 by 521, we get 3 with a remainder of 357.
Write down 3 as next digit of the result. 
Result so far: 76684.3
Subtracting 1563 from 1920 leaves us with 357.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3570, and continue the process.

Moving on to step 10:
3570 divided by 521 is 6 with a remainder of 444.
Put 6 as the next digit of the answer. 
Result so far: 76684.36
Subtracting 3126 from 3570 leaves us with 444.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4440, and continue the process.

Going ahead to step 11:
The number 521 fits into 4440 8 times, leaving a remainder of 272.
Record the quotient 8 as the next digit in the result. 
Result so far: 76684.368
If we subtract 4168 from 4440, we get 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Advancing to step 12:
If we divide 2720 by 521, we get 5 and a remainder of 115.
Record the quotient 5 as the next digit in the result. 
Result so far: 76684.3685
Subtracting 2605 from 2720 leaves us with 115.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1150, and continue the process.

Step 13:
The number 521 fits into 1150 2 times, leaving a remainder of 108.
The number 2 becomes the next digit in our result. 
Result so far: 76684.36852
Deduct 1042 from 1150 and we're left with 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

Let's proceed to step 14:
If we divide 1080 by 521, we get 2 and a remainder of 38.
The next digit of our result is 2. 
Result so far: 76684.368522
Subtract 1042 from 1080 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

The quotient of the division is 76684.368522, and the remainder is 3.8e-06.