Let's divide 77979173 by 721
We're looking to find how many times 721 goes into 77979173.

Step 1:
7 divided by 721 is 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Append the next digit (7) from the dividend to 7 and continue with: 77 / 721

Going ahead to step 2:
If we divide 77 by 721, we get 0 and a remainder of 77.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 77 and we're left with 77.
Fetch the next digit (9) from the dividend, attach it to 77 and continue: 779 / 721

Moving on to step 3:
The number 721 fits into 779 1 times, leaving a remainder of 58.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 58 after subtracting 721 from 779.
Bring next digit (7) of the dividend behind the 58 and repeat the process: 587 / 721

Moving on to step 4:
If we divide 587 by 721, we get 0 and a remainder of 587.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Deduct 0 from 587 and we're left with 587.
Grab the next digit (9) from the dividend, add it to 587, then carry on: 5879 / 721

Step 5:
5879 divided by 721 is 8 with a remainder of 111.
The number 8 becomes the next digit in our result. 
Result so far: 108.0
Deduct 5768 from 5879 and we're left with 111.
Take the next digit (1) from the dividend and append it to 111, then repeat: 1111 / 721

Advancing to step 6:
When dividing 1111 by 721, we get 1 with a remainder of 390.
The next digit of our result is 1. 
Result so far: 1081.0
Subtract 721 from 1111 to get 390.
Bring next digit (7) of the dividend behind the 390 and repeat the process: 3907 / 721

Moving on to step 7:
721 can be fit into 3907 5 times, resulting in a remainder of 302.
Use 5 as the next digit of our solution. 
Result so far: 10815.0
Subtracting 3605 from 3907 leaves us with 302.
Grab the next digit (3) from the dividend, add it to 302, then carry on: 3023 / 721

Going ahead to step 8:
721 goes into 3023 4 times with a remainder of 139.
Write down 4 as next digit of the result. 
Result so far: 108154.0
If we take 2884 away from 3023, we end up with 139.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1390, and continue the process.

On to step 9:
1390 divided by 721 is 1 with a remainder of 669.
Write down 1 as next digit of the result. 
Result so far: 108154.1
If we take 721 away from 1390, we end up with 669.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6690, and continue the process.

Going ahead to step 10:
The number 721 fits into 6690 9 times, leaving a remainder of 201.
Record the quotient 9 as the next digit in the result. 
Result so far: 108154.19
Subtracting 6489 from 6690 leaves us with 201.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2010, and continue the process.

Advancing to step 11:
721 can be fit into 2010 2 times, resulting in a remainder of 568.
Use 2 as the next digit of our solution. 
Result so far: 108154.192
If we subtract 1442 from 2010, we get 568.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5680, and continue the process.

On to step 12:
The number 721 fits into 5680 7 times, leaving a remainder of 633.
Write down 7 as next digit of the result. 
Result so far: 108154.1927
Deduct 5047 from 5680 and we're left with 633.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6330, and continue the process.

Advancing to step 13:
When dividing 6330 by 721, we get 8 with a remainder of 562.
Use 8 as the next digit of our solution. 
Result so far: 108154.19278
If we subtract 5768 from 6330, we get 562.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5620, and continue the process.

On to step 14:
721 can be fit into 5620 7 times, resulting in a remainder of 573.
Record the quotient 7 as the next digit in the result. 
Result so far: 108154.192787
If we take 5047 away from 5620, we end up with 573.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5730, and continue the process.

Let's proceed to step 15:
If we divide 5730 by 721, we get 7 and a remainder of 683.
The next digit of our result is 7. 
Result so far: 108154.1927877
Subtract 5047 from 5730 to get 683.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6830, and continue the process.

In conclusion, the division gives 108154.1927877 with a balance of 6.83e-06.