We're dividing 77019879 by 521 
We're looking to find how many times 521 goes into 77019879.

On to step 1:
The number 521 fits into 7 0 times, leaving a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Append the next digit (7) from the dividend to 7 and continue with: 77 / 521

Step 2:
521 goes into 77 0 times with a remainder of 77.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 77, we end up with 77.
Include the next digit (0) from the dividend after 77, then repeat: 770 / 521

Step 3:
If we divide 770 by 521, we get 1 and a remainder of 249.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 521 from 770 leaves us with 249.
Grab the next digit (1) from the dividend, add it to 249, then carry on: 2491 / 521

Going ahead to step 4:
If we divide 2491 by 521, we get 4 and a remainder of 407.
Put 4 as the next digit of the answer. 
Result so far: 14.0
If we take 2084 away from 2491, we end up with 407.
Include the next digit (9) from the dividend after 407, then repeat: 4079 / 521

Moving on to step 5:
521 can be fit into 4079 7 times, resulting in a remainder of 432.
Put 7 as the next digit of the answer. 
Result so far: 147.0
The remainder is 432 after subtracting 3647 from 4079.
Grab the next digit (8) from the dividend, add it to 432, then carry on: 4328 / 521

Going ahead to step 6:
4328 divided by 521 is 8 with a remainder of 160.
Write down 8 as next digit of the result. 
Result so far: 1478.0
If we take 4168 away from 4328, we end up with 160.
Append the next digit (7) from the dividend to 160 and continue with: 1607 / 521

Advancing to step 7:
When dividing 1607 by 521, we get 3 with a remainder of 44.
The next digit of our result is 3. 
Result so far: 14783.0
If we take 1563 away from 1607, we end up with 44.
Fetch the next digit (9) from the dividend, attach it to 44 and continue: 449 / 521

Moving on to step 8:
When dividing 449 by 521, we get 0 with a remainder of 449.
Write down 0 as next digit of the result. 
Result so far: 147830.0
If we subtract 0 from 449, we get 449.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4490, and continue the process.

On to step 9:
When dividing 4490 by 521, we get 8 with a remainder of 322.
The number 8 becomes the next digit in our result. 
Result so far: 147830.8
Subtracting 4168 from 4490 leaves us with 322.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3220, and continue the process.

Advancing to step 10:
521 goes into 3220 6 times with a remainder of 94.
Write down 6 as next digit of the result. 
Result so far: 147830.86
Deduct 3126 from 3220 and we're left with 94.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

Step 11:
The number 521 fits into 940 1 times, leaving a remainder of 419.
The next digit of our result is 1. 
Result so far: 147830.861
The remainder is 419 after subtracting 521 from 940.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4190, and continue the process.

Going ahead to step 12:
If we divide 4190 by 521, we get 8 and a remainder of 22.
Write down 8 as next digit of the result. 
Result so far: 147830.8618
If we subtract 4168 from 4190, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 13:
If we divide 220 by 521, we get 0 and a remainder of 220.
The number 0 becomes the next digit in our result. 
Result so far: 147830.8618
Subtracting 0 from 220 leaves us with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Advancing to step 14:
When dividing 2200 by 521, we get 4 with a remainder of 116.
Put 4 as the next digit of the answer. 
Result so far: 147830.861804
If we take 2084 away from 2200, we end up with 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Going ahead to step 15:
521 can be fit into 1160 2 times, resulting in a remainder of 118.
The number 2 becomes the next digit in our result. 
Result so far: 147830.8618042
Subtract 1042 from 1160 to get 118.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1180, and continue the process.

Moving on to step 16:
When dividing 1180 by 521, we get 2 with a remainder of 138.
The next digit of our result is 2. 
Result so far: 147830.86180422
Subtract 1042 from 1180 to get 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

The final outcome is 147830.86180422, with a leftover of 1.38e-07.