We're dividing 993421 by 75 
We want to figure out the number of times 993421 can be divided by 75.

Let's proceed to step 1:
When dividing 9 by 75, we get 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 75

On to step 2:
The number 75 fits into 99 1 times, leaving a remainder of 24.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 75 from 99 to get 24.
Include the next digit (3) from the dividend after 24, then repeat: 243 / 75

Moving on to step 3:
When dividing 243 by 75, we get 3 with a remainder of 18.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
Subtract 225 from 243 to get 18.
Append the next digit (4) from the dividend to 18 and continue with: 184 / 75

Advancing to step 4:
When dividing 184 by 75, we get 2 with a remainder of 34.
Use 2 as the next digit of our solution. 
Result so far: 132.0
Subtract 150 from 184 to get 34.
Bring next digit (2) of the dividend behind the 34 and repeat the process: 342 / 75

Step 5:
75 goes into 342 4 times with a remainder of 42.
Use 4 as the next digit of our solution. 
Result so far: 1324.0
Subtract 300 from 342 to get 42.
Take the next digit (1) from the dividend and append it to 42, then repeat: 421 / 75

Let's proceed to step 6:
421 divided by 75 is 5 with a remainder of 46.
Record the quotient 5 as the next digit in the result. 
Result so far: 13245.0
If we take 375 away from 421, we end up with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Let's proceed to step 7:
The number 75 fits into 460 6 times, leaving a remainder of 10.
Write down 6 as next digit of the result. 
Result so far: 13245.6
If we take 450 away from 460, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 8:
100 divided by 75 is 1 with a remainder of 25.
Write down 1 as next digit of the result. 
Result so far: 13245.61
If we take 75 away from 100, 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.

On to step 9:
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: 13245.613
If we subtract 225 from 250, we 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.

Going ahead to step 10:
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: 13245.6133
Subtracting 225 from 250 leaves us 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.

After the division, we end up with 13245.6133 and a remainder of 0.00025.