80315315 ÷ 620 
We want to figure out the number of times 80315315 can be divided by 620.

Advancing to step 1:
620 can be fit into 8 0 times, resulting in a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Take the next digit (0) from the dividend and append it to 8, then repeat: 80 / 620

Going ahead to step 2:
When dividing 80 by 620, we get 0 with a remainder of 80.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 80 and we're left with 80.
Grab the next digit (3) from the dividend, add it to 80, then carry on: 803 / 620

On to step 3:
The number 620 fits into 803 1 times, leaving a remainder of 183.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 183 after subtracting 620 from 803.
Grab the next digit (1) from the dividend, add it to 183, then carry on: 1831 / 620

Going ahead to step 4:
620 can be fit into 1831 2 times, resulting in a remainder of 591.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
Subtract 1240 from 1831 to get 591.
Take the next digit (5) from the dividend and append it to 591, then repeat: 5915 / 620

Step 5:
620 can be fit into 5915 9 times, resulting in a remainder of 335.
The number 9 becomes the next digit in our result. 
Result so far: 129.0
Deduct 5580 from 5915 and we're left with 335.
Append the next digit (3) from the dividend to 335 and continue with: 3353 / 620

Moving on to step 6:
3353 divided by 620 is 5 with a remainder of 253.
The next digit of our result is 5. 
Result so far: 1295.0
Subtract 3100 from 3353 to get 253.
Grab the next digit (1) from the dividend, add it to 253, then carry on: 2531 / 620

Going ahead to step 7:
620 goes into 2531 4 times with a remainder of 51.
Record the quotient 4 as the next digit in the result. 
Result so far: 12954.0
If we subtract 2480 from 2531, we get 51.
Fetch the next digit (5) from the dividend, attach it to 51 and continue: 515 / 620

Step 8:
620 goes into 515 0 times with a remainder of 515.
Record the quotient 0 as the next digit in the result. 
Result so far: 129540.0
Subtracting 0 from 515 leaves us with 515.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5150, and continue the process.

On to step 9:
5150 divided by 620 is 8 with a remainder of 190.
The next digit of our result is 8. 
Result so far: 129540.8
The remainder is 190 after subtracting 4960 from 5150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Step 10:
If we divide 1900 by 620, we get 3 and a remainder of 40.
Write down 3 as next digit of the result. 
Result so far: 129540.83
Subtracting 1860 from 1900 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 11:
If we divide 400 by 620, we get 0 and a remainder of 400.
The number 0 becomes the next digit in our result. 
Result so far: 129540.83
Subtract 0 from 400 to get 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Advancing to step 12:
When dividing 4000 by 620, we get 6 with a remainder of 280.
Write down 6 as next digit of the result. 
Result so far: 129540.8306
Subtract 3720 from 4000 to get 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Moving on to step 13:
2800 divided by 620 is 4 with a remainder of 320.
The number 4 becomes the next digit in our result. 
Result so far: 129540.83064
If we take 2480 away from 2800, we end up with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

On to step 14:
620 goes into 3200 5 times with a remainder of 100.
Write down 5 as next digit of the result. 
Result so far: 129540.830645
Subtract 3100 from 3200 to get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Going ahead to step 15:
620 can be fit into 1000 1 times, resulting in a remainder of 380.
Record the quotient 1 as the next digit in the result. 
Result so far: 129540.8306451
Subtracting 620 from 1000 leaves us with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Advancing to step 16:
3800 divided by 620 is 6 with a remainder of 80.
The number 6 becomes the next digit in our result. 
Result so far: 129540.83064516
If we subtract 3720 from 3800, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

In conclusion, the division gives 129540.83064516 with a balance of 8e-08.