We're dividing 15188577 by 45 
We want to divide 15188577 by 45.

On to step 1:
When dividing 1 by 45, we get 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Fetch the next digit (5) from the dividend, attach it to 1 and continue: 15 / 45

Moving on to step 2:
45 goes into 15 0 times with a remainder of 15.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 15 after subtracting 0 from 15.
Fetch the next digit (1) from the dividend, attach it to 15 and continue: 151 / 45

On to step 3:
If we divide 151 by 45, we get 3 and a remainder of 16.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Subtracting 135 from 151 leaves us with 16.
Fetch the next digit (8) from the dividend, attach it to 16 and continue: 168 / 45

Step 4:
When dividing 168 by 45, we get 3 with a remainder of 33.
The number 3 becomes the next digit in our result. 
Result so far: 33.0
If we subtract 135 from 168, we get 33.
Take the next digit (8) from the dividend and append it to 33, then repeat: 338 / 45

Going ahead to step 5:
45 goes into 338 7 times with a remainder of 23.
Write down 7 as next digit of the result. 
Result so far: 337.0
If we subtract 315 from 338, we get 23.
Bring next digit (5) of the dividend behind the 23 and repeat the process: 235 / 45

On to step 6:
When dividing 235 by 45, we get 5 with a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 3375.0
Deduct 225 from 235 and we're left with 10.
Fetch the next digit (7) from the dividend, attach it to 10 and continue: 107 / 45

Moving on to step 7:
107 divided by 45 is 2 with a remainder of 17.
The number 2 becomes the next digit in our result. 
Result so far: 33752.0
If we subtract 90 from 107, we get 17.
Grab the next digit (7) from the dividend, add it to 17, then carry on: 177 / 45

Step 8:
When dividing 177 by 45, we get 3 with a remainder of 42.
Use 3 as the next digit of our solution. 
Result so far: 337523.0
The remainder is 42 after subtracting 135 from 177.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Step 9:
The number 45 fits into 420 9 times, leaving a remainder of 15.
Use 9 as the next digit of our solution. 
Result so far: 337523.9
The remainder is 15 after subtracting 405 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 10:
45 goes into 150 3 times with a remainder of 15.
The next digit of our result is 3. 
Result so far: 337523.93
If we take 135 away from 150, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 11:
When dividing 150 by 45, we get 3 with a remainder of 15.
The next digit of our result is 3. 
Result so far: 337523.933
If we subtract 135 from 150, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

The quotient of the division is 337523.933, and the remainder is 0.0015.