We look at the division of 15911220 by 654 
We're looking to find how many times 654 goes into 15911220.

Step 1:
654 can be fit into 1 0 times, resulting in a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 654

Step 2:
654 can be fit into 15 0 times, resulting in a remainder of 15.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 15 leaves us with 15.
Bring next digit (9) of the dividend behind the 15 and repeat the process: 159 / 654

Step 3:
654 goes into 159 0 times with a remainder of 159.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 159 to get 159.
Bring next digit (1) of the dividend behind the 159 and repeat the process: 1591 / 654

Advancing to step 4:
If we divide 1591 by 654, we get 2 and a remainder of 283.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 1308 from 1591 and we're left with 283.
Append the next digit (1) from the dividend to 283 and continue with: 2831 / 654

Moving on to step 5:
654 goes into 2831 4 times with a remainder of 215.
The next digit of our result is 4. 
Result so far: 24.0
Subtracting 2616 from 2831 leaves us with 215.
Grab the next digit (2) from the dividend, add it to 215, then carry on: 2152 / 654

Let's proceed to step 6:
2152 divided by 654 is 3 with a remainder of 190.
The next digit of our result is 3. 
Result so far: 243.0
Subtract 1962 from 2152 to get 190.
Fetch the next digit (2) from the dividend, attach it to 190 and continue: 1902 / 654

On to step 7:
1902 divided by 654 is 2 with a remainder of 594.
The next digit of our result is 2. 
Result so far: 2432.0
If we take 1308 away from 1902, we end up with 594.
Include the next digit (0) from the dividend after 594, then repeat: 5940 / 654

On to step 8:
654 can be fit into 5940 9 times, resulting in a remainder of 54.
Write down 9 as next digit of the result. 
Result so far: 24329.0
Deduct 5886 from 5940 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Let's proceed to step 9:
The number 654 fits into 540 0 times, leaving a remainder of 540.
The number 0 becomes the next digit in our result. 
Result so far: 24329.0
If we take 0 away from 540, we end up with 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

Advancing to step 10:
654 goes into 5400 8 times with a remainder of 168.
The next digit of our result is 8. 
Result so far: 24329.08
The remainder is 168 after subtracting 5232 from 5400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Step 11:
The number 654 fits into 1680 2 times, leaving a remainder of 372.
Use 2 as the next digit of our solution. 
Result so far: 24329.082
Subtracting 1308 from 1680 leaves us with 372.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

Moving on to step 12:
654 can be fit into 3720 5 times, resulting in a remainder of 450.
Put 5 as the next digit of the answer. 
Result so far: 24329.0825
Subtracting 3270 from 3720 leaves us with 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

Moving on to step 13:
When dividing 4500 by 654, we get 6 with a remainder of 576.
Use 6 as the next digit of our solution. 
Result so far: 24329.08256
If we take 3924 away from 4500, we end up with 576.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5760, and continue the process.

On to step 14:
654 goes into 5760 8 times with a remainder of 528.
Record the quotient 8 as the next digit in the result. 
Result so far: 24329.082568
Subtracting 5232 from 5760 leaves us with 528.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5280, and continue the process.

Step 15:
654 goes into 5280 8 times with a remainder of 48.
Put 8 as the next digit of the answer. 
Result so far: 24329.0825688
Subtract 5232 from 5280 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

The quotient of the division is 24329.0825688, and the remainder is 4.8e-07.