54223586 divided by 15 
We want to figure out the number of times 54223586 can be divided by 15.

Moving on to step 1:
5 divided by 15 is 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Grab the next digit (4) from the dividend, add it to 5, then carry on: 54 / 15

On to step 2:
If we divide 54 by 15, we get 3 and a remainder of 9.
The next digit of our result is 3. 
Result so far: 3.0
The remainder is 9 after subtracting 45 from 54.
Grab the next digit (2) from the dividend, add it to 9, then carry on: 92 / 15

On to step 3:
If we divide 92 by 15, we get 6 and a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 36.0
Subtract 90 from 92 to get 2.
Fetch the next digit (2) from the dividend, attach it to 2 and continue: 22 / 15

Let's proceed to step 4:
15 goes into 22 1 times with a remainder of 7.
Use 1 as the next digit of our solution. 
Result so far: 361.0
If we subtract 15 from 22, we get 7.
Append the next digit (3) from the dividend to 7 and continue with: 73 / 15

Moving on to step 5:
15 goes into 73 4 times with a remainder of 13.
The number 4 becomes the next digit in our result. 
Result so far: 3614.0
If we take 60 away from 73, we end up with 13.
Grab the next digit (5) from the dividend, add it to 13, then carry on: 135 / 15

Step 6:
15 can be fit into 135 9 times, resulting in a remainder of 0.
The next digit of our result is 9. 
Result so far: 36149.0
Subtracting 135 from 135 leaves us with 0.
Grab the next digit (8) from the dividend, add it to 0, then carry on: 8 / 15

Moving on to step 7:
15 can be fit into 8 0 times, resulting in a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 361490.0
Deduct 0 from 8 and we're left with 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 15

On to step 8:
86 divided by 15 is 5 with a remainder of 11.
The number 5 becomes the next digit in our result. 
Result so far: 3614905.0
If we subtract 75 from 86, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 9:
15 goes into 110 7 times with a remainder of 5.
Write down 7 as next digit of the result. 
Result so far: 3614905.7
If we subtract 105 from 110, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 10:
If we divide 50 by 15, we get 3 and a remainder of 5.
Record the quotient 3 as the next digit in the result. 
Result so far: 3614905.73
If we take 45 away from 50, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 11:
If we divide 50 by 15, we get 3 and a remainder of 5.
Use 3 as the next digit of our solution. 
Result so far: 3614905.733
If we take 45 away from 50, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

In conclusion, the division gives 3614905.733 with a balance of 0.0005.