We divide 75478854 by 421
Our goal is to divide 75478854 by 421.

On to step 1:
421 goes into 7 0 times with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Take the next digit (5) from the dividend and append it to 7, then repeat: 75 / 421

Step 2:
If we divide 75 by 421, we get 0 and a remainder of 75.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 75, we get 75.
Include the next digit (4) from the dividend after 75, then repeat: 754 / 421

Moving on to step 3:
The number 421 fits into 754 1 times, leaving a remainder of 333.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 421 from 754, we get 333.
Take the next digit (7) from the dividend and append it to 333, then repeat: 3337 / 421

Step 4:
3337 divided by 421 is 7 with a remainder of 390.
Record the quotient 7 as the next digit in the result. 
Result so far: 17.0
Deduct 2947 from 3337 and we're left with 390.
Include the next digit (8) from the dividend after 390, then repeat: 3908 / 421

Step 5:
421 goes into 3908 9 times with a remainder of 119.
Record the quotient 9 as the next digit in the result. 
Result so far: 179.0
The remainder is 119 after subtracting 3789 from 3908.
Take the next digit (8) from the dividend and append it to 119, then repeat: 1198 / 421

On to step 6:
The number 421 fits into 1198 2 times, leaving a remainder of 356.
The number 2 becomes the next digit in our result. 
Result so far: 1792.0
If we subtract 842 from 1198, we get 356.
Append the next digit (5) from the dividend to 356 and continue with: 3565 / 421

Let's proceed to step 7:
421 can be fit into 3565 8 times, resulting in a remainder of 197.
The next digit of our result is 8. 
Result so far: 17928.0
The remainder is 197 after subtracting 3368 from 3565.
Grab the next digit (4) from the dividend, add it to 197, then carry on: 1974 / 421

On to step 8:
The number 421 fits into 1974 4 times, leaving a remainder of 290.
Use 4 as the next digit of our solution. 
Result so far: 179284.0
The remainder is 290 after subtracting 1684 from 1974.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Moving on to step 9:
421 can be fit into 2900 6 times, resulting in a remainder of 374.
Record the quotient 6 as the next digit in the result. 
Result so far: 179284.6
Subtract 2526 from 2900 to get 374.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3740, and continue the process.

Let's proceed to step 10:
421 goes into 3740 8 times with a remainder of 372.
Use 8 as the next digit of our solution. 
Result so far: 179284.68
If we subtract 3368 from 3740, we get 372.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

Let's proceed to step 11:
When dividing 3720 by 421, we get 8 with a remainder of 352.
The next digit of our result is 8. 
Result so far: 179284.688
Subtract 3368 from 3720 to get 352.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

The quotient of the division is 179284.688, and the remainder is 0.0352.