Let's divide 90645400 by 75
Our goal is to divide 90645400 by 75.

Moving on to step 1:
9 divided by 75 is 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Bring next digit (0) of the dividend behind the 9 and repeat the process: 90 / 75

Moving on to step 2:
When dividing 90 by 75, we get 1 with a remainder of 15.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 75 from 90 and we're left with 15.
Bring next digit (6) of the dividend behind the 15 and repeat the process: 156 / 75

Let's proceed to step 3:
75 can be fit into 156 2 times, resulting in a remainder of 6.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
Subtract 150 from 156 to get 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 75

On to step 4:
The number 75 fits into 64 0 times, leaving a remainder of 64.
The number 0 becomes the next digit in our result. 
Result so far: 120.0
The remainder is 64 after subtracting 0 from 64.
Take the next digit (5) from the dividend and append it to 64, then repeat: 645 / 75

On to step 5:
If we divide 645 by 75, we get 8 and a remainder of 45.
Put 8 as the next digit of the answer. 
Result so far: 1208.0
If we subtract 600 from 645, we get 45.
Take the next digit (4) from the dividend and append it to 45, then repeat: 454 / 75

On to step 6:
454 divided by 75 is 6 with a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 12086.0
If we take 450 away from 454, we end up with 4.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 75

Going ahead to step 7:
The number 75 fits into 40 0 times, leaving a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 120860.0
Subtract 0 from 40 to get 40.
Append the next digit (0) from the dividend to 40 and continue with: 400 / 75

Step 8:
If we divide 400 by 75, we get 5 and a remainder of 25.
Write down 5 as next digit of the result. 
Result so far: 1208605.0
The remainder is 25 after subtracting 375 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 9:
75 can be fit into 250 3 times, resulting in a remainder of 25.
Write down 3 as next digit of the result. 
Result so far: 1208605.3
If we take 225 away from 250, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Step 10:
The number 75 fits into 250 3 times, leaving a remainder of 25.
Record the quotient 3 as the next digit in the result. 
Result so far: 1208605.33
Subtract 225 from 250 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

The final outcome is 1208605.33, with a leftover of 0.025.