79870230 ÷ 615 
Our goal is to divide 79870230 by 615.

Let's proceed to step 1:
The number 615 fits into 7 0 times, leaving a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Bring next digit (9) of the dividend behind the 7 and repeat the process: 79 / 615

Advancing to step 2:
615 goes into 79 0 times with a remainder of 79.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 79 leaves us with 79.
Take the next digit (8) from the dividend and append it to 79, then repeat: 798 / 615

On to step 3:
615 goes into 798 1 times with a remainder of 183.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 615 from 798 and we're left with 183.
Include the next digit (7) from the dividend after 183, then repeat: 1837 / 615

Step 4:
When dividing 1837 by 615, we get 2 with a remainder of 607.
Use 2 as the next digit of our solution. 
Result so far: 12.0
Deduct 1230 from 1837 and we're left with 607.
Append the next digit (0) from the dividend to 607 and continue with: 6070 / 615

On to step 5:
615 can be fit into 6070 9 times, resulting in a remainder of 535.
Record the quotient 9 as the next digit in the result. 
Result so far: 129.0
If we subtract 5535 from 6070, we get 535.
Include the next digit (2) from the dividend after 535, then repeat: 5352 / 615

Advancing to step 6:
If we divide 5352 by 615, we get 8 and a remainder of 432.
The number 8 becomes the next digit in our result. 
Result so far: 1298.0
The remainder is 432 after subtracting 4920 from 5352.
Include the next digit (3) from the dividend after 432, then repeat: 4323 / 615

Going ahead to step 7:
615 can be fit into 4323 7 times, resulting in a remainder of 18.
The number 7 becomes the next digit in our result. 
Result so far: 12987.0
Deduct 4305 from 4323 and we're left with 18.
Fetch the next digit (0) from the dividend, attach it to 18 and continue: 180 / 615

Moving on to step 8:
180 divided by 615 is 0 with a remainder of 180.
Use 0 as the next digit of our solution. 
Result so far: 129870.0
Deduct 0 from 180 and we're left with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Step 9:
615 can be fit into 1800 2 times, resulting in a remainder of 570.
Use 2 as the next digit of our solution. 
Result so far: 129870.2
If we take 1230 away from 1800, we end up with 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5700, and continue the process.

Let's proceed to step 10:
If we divide 5700 by 615, we get 9 and a remainder of 165.
The number 9 becomes the next digit in our result. 
Result so far: 129870.29
If we take 5535 away from 5700, we end up with 165.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

Step 11:
If we divide 1650 by 615, we get 2 and a remainder of 420.
Record the quotient 2 as the next digit in the result. 
Result so far: 129870.292
The remainder is 420 after subtracting 1230 from 1650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Going ahead to step 12:
If we divide 4200 by 615, we get 6 and a remainder of 510.
Record the quotient 6 as the next digit in the result. 
Result so far: 129870.2926
If we take 3690 away from 4200, we end up with 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5100, and continue the process.

Moving on to step 13:
When dividing 5100 by 615, we get 8 with a remainder of 180.
Write down 8 as next digit of the result. 
Result so far: 129870.29268
If we subtract 4920 from 5100, we get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Moving on to step 14:
When dividing 1800 by 615, we get 2 with a remainder of 570.
Write down 2 as next digit of the result. 
Result so far: 129870.292682
If we take 1230 away from 1800, we end up with 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5700, and continue the process.

Step 15:
615 can be fit into 5700 9 times, resulting in a remainder of 165.
Put 9 as the next digit of the answer. 
Result so far: 129870.2926829
If we subtract 5535 from 5700, we get 165.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

On to step 16:
The number 615 fits into 1650 2 times, leaving a remainder of 420.
Write down 2 as next digit of the result. 
Result so far: 129870.29268292
The remainder is 420 after subtracting 1230 from 1650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

The quotient of the division is 129870.29268292, and the remainder is 4.2e-07.