79815109 ÷ 254 
Let's see how many times 254 fits into 79815109.

Step 1:
When dividing 7 by 254, we get 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Append the next digit (9) from the dividend to 7 and continue with: 79 / 254

Step 2:
254 can be fit into 79 0 times, resulting in a remainder of 79.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 79 and we're left with 79.
Bring next digit (8) of the dividend behind the 79 and repeat the process: 798 / 254

Advancing to step 3:
254 goes into 798 3 times with a remainder of 36.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we take 762 away from 798, we end up with 36.
Append the next digit (1) from the dividend to 36 and continue with: 361 / 254

Advancing to step 4:
254 goes into 361 1 times with a remainder of 107.
Record the quotient 1 as the next digit in the result. 
Result so far: 31.0
If we take 254 away from 361, we end up with 107.
Include the next digit (5) from the dividend after 107, then repeat: 1075 / 254

Advancing to step 5:
The number 254 fits into 1075 4 times, leaving a remainder of 59.
Write down 4 as next digit of the result. 
Result so far: 314.0
If we subtract 1016 from 1075, we get 59.
Append the next digit (1) from the dividend to 59 and continue with: 591 / 254

On to step 6:
If we divide 591 by 254, we get 2 and a remainder of 83.
Use 2 as the next digit of our solution. 
Result so far: 3142.0
If we subtract 508 from 591, we get 83.
Fetch the next digit (0) from the dividend, attach it to 83 and continue: 830 / 254

Step 7:
The number 254 fits into 830 3 times, leaving a remainder of 68.
Record the quotient 3 as the next digit in the result. 
Result so far: 31423.0
If we subtract 762 from 830, we get 68.
Fetch the next digit (9) from the dividend, attach it to 68 and continue: 689 / 254

Advancing to step 8:
254 can be fit into 689 2 times, resulting in a remainder of 181.
Put 2 as the next digit of the answer. 
Result so far: 314232.0
The remainder is 181 after subtracting 508 from 689.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1810, and continue the process.

On to step 9:
1810 divided by 254 is 7 with a remainder of 32.
Record the quotient 7 as the next digit in the result. 
Result so far: 314232.7
If we take 1778 away from 1810, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 10:
If we divide 320 by 254, we get 1 and a remainder of 66.
Record the quotient 1 as the next digit in the result. 
Result so far: 314232.71
If we subtract 254 from 320, we get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Moving on to step 11:
When dividing 660 by 254, we get 2 with a remainder of 152.
Use 2 as the next digit of our solution. 
Result so far: 314232.712
Subtract 508 from 660 to get 152.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

Advancing to step 12:
254 goes into 1520 5 times with a remainder of 250.
Write down 5 as next digit of the result. 
Result so far: 314232.7125
The remainder is 250 after subtracting 1270 from 1520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Step 13:
2500 divided by 254 is 9 with a remainder of 214.
Use 9 as the next digit of our solution. 
Result so far: 314232.71259
The remainder is 214 after subtracting 2286 from 2500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2140, and continue the process.

Let's proceed to step 14:
When dividing 2140 by 254, we get 8 with a remainder of 108.
Write down 8 as next digit of the result. 
Result so far: 314232.712598
Subtract 2032 from 2140 to get 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

On to step 15:
254 goes into 1080 4 times with a remainder of 64.
The number 4 becomes the next digit in our result. 
Result so far: 314232.7125984
If we subtract 1016 from 1080, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

On to step 16:
The number 254 fits into 640 2 times, leaving a remainder of 132.
Put 2 as the next digit of the answer. 
Result so far: 314232.71259842
Deduct 508 from 640 and we're left with 132.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

The quotient of the division is 314232.71259842, and the remainder is 1.32e-07.