We look at the division of 921564 by 75 
We want to figure out the number of times 921564 can be divided by 75.

On to step 1:
When dividing 9 by 75, we get 0 with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Append the next digit (2) from the dividend to 9 and continue with: 92 / 75

Let's proceed to step 2:
The number 75 fits into 92 1 times, leaving a remainder of 17.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 17 after subtracting 75 from 92.
Grab the next digit (1) from the dividend, add it to 17, then carry on: 171 / 75

Going ahead to step 3:
When dividing 171 by 75, we get 2 with a remainder of 21.
The next digit of our result is 2. 
Result so far: 12.0
Subtracting 150 from 171 leaves us with 21.
Grab the next digit (5) from the dividend, add it to 21, then carry on: 215 / 75

Advancing to step 4:
When dividing 215 by 75, we get 2 with a remainder of 65.
Use 2 as the next digit of our solution. 
Result so far: 122.0
Subtract 150 from 215 to get 65.
Take the next digit (6) from the dividend and append it to 65, then repeat: 656 / 75

Moving on to step 5:
When dividing 656 by 75, we get 8 with a remainder of 56.
The number 8 becomes the next digit in our result. 
Result so far: 1228.0
If we subtract 600 from 656, we get 56.
Append the next digit (4) from the dividend to 56 and continue with: 564 / 75

On to step 6:
564 divided by 75 is 7 with a remainder of 39.
The next digit of our result is 7. 
Result so far: 12287.0
Subtracting 525 from 564 leaves us with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Moving on to step 7:
75 can be fit into 390 5 times, resulting in a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 12287.5
If we subtract 375 from 390, 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.

Advancing to step 8:
75 goes into 150 2 times with a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 12287.52
Subtract 150 from 150 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 9:
When dividing 0 by 75, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 12287.52
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 10:
The number 75 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 12287.52
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 12287.52 with a remaining 0.0.