We divide 11545712 by 90
We want to figure out the number of times 11545712 can be divided by 90.

Moving on to step 1:
If we divide 1 by 90, we get 0 and a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Bring next digit (1) of the dividend behind the 1 and repeat the process: 11 / 90

Step 2:
When dividing 11 by 90, we get 0 with a remainder of 11.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 11 after subtracting 0 from 11.
Fetch the next digit (5) from the dividend, attach it to 11 and continue: 115 / 90

On to step 3:
90 can be fit into 115 1 times, resulting in a remainder of 25.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 90 from 115 to get 25.
Append the next digit (4) from the dividend to 25 and continue with: 254 / 90

Going ahead to step 4:
When dividing 254 by 90, we get 2 with a remainder of 74.
The next digit of our result is 2. 
Result so far: 12.0
Deduct 180 from 254 and we're left with 74.
Append the next digit (5) from the dividend to 74 and continue with: 745 / 90

Step 5:
90 goes into 745 8 times with a remainder of 25.
The next digit of our result is 8. 
Result so far: 128.0
The remainder is 25 after subtracting 720 from 745.
Grab the next digit (7) from the dividend, add it to 25, then carry on: 257 / 90

On to step 6:
257 divided by 90 is 2 with a remainder of 77.
Use 2 as the next digit of our solution. 
Result so far: 1282.0
The remainder is 77 after subtracting 180 from 257.
Fetch the next digit (1) from the dividend, attach it to 77 and continue: 771 / 90

On to step 7:
771 divided by 90 is 8 with a remainder of 51.
Put 8 as the next digit of the answer. 
Result so far: 12828.0
Subtracting 720 from 771 leaves us with 51.
Grab the next digit (2) from the dividend, add it to 51, then carry on: 512 / 90

Let's proceed to step 8:
90 can be fit into 512 5 times, resulting in a remainder of 62.
Use 5 as the next digit of our solution. 
Result so far: 128285.0
The remainder is 62 after subtracting 450 from 512.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Step 9:
When dividing 620 by 90, we get 6 with a remainder of 80.
Use 6 as the next digit of our solution. 
Result so far: 128285.6
If we take 540 away from 620, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 10:
If we divide 800 by 90, we get 8 and a remainder of 80.
Record the quotient 8 as the next digit in the result. 
Result so far: 128285.68
The remainder is 80 after subtracting 720 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Moving on to step 11:
When dividing 800 by 90, we get 8 with a remainder of 80.
The number 8 becomes the next digit in our result. 
Result so far: 128285.688
Deduct 720 from 800 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

The quotient of the division is 128285.688, and the remainder is 0.008.