75102633 divided by 421 
Let's see how many times 421 fits into 75102633.

Step 1:
421 goes into 7 0 times with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Fetch the next digit (5) from the dividend, attach it to 7 and continue: 75 / 421

Going ahead to step 2:
421 goes into 75 0 times with a remainder of 75.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 75 leaves us with 75.
Bring next digit (1) of the dividend behind the 75 and repeat the process: 751 / 421

Let's proceed to step 3:
751 divided by 421 is 1 with a remainder of 330.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 421 from 751 to get 330.
Fetch the next digit (0) from the dividend, attach it to 330 and continue: 3300 / 421

Moving on to step 4:
421 can be fit into 3300 7 times, resulting in a remainder of 353.
The number 7 becomes the next digit in our result. 
Result so far: 17.0
Subtract 2947 from 3300 to get 353.
Fetch the next digit (2) from the dividend, attach it to 353 and continue: 3532 / 421

On to step 5:
When dividing 3532 by 421, we get 8 with a remainder of 164.
Put 8 as the next digit of the answer. 
Result so far: 178.0
Subtract 3368 from 3532 to get 164.
Take the next digit (6) from the dividend and append it to 164, then repeat: 1646 / 421

On to step 6:
When dividing 1646 by 421, we get 3 with a remainder of 383.
Write down 3 as next digit of the result. 
Result so far: 1783.0
The remainder is 383 after subtracting 1263 from 1646.
Take the next digit (3) from the dividend and append it to 383, then repeat: 3833 / 421

Step 7:
When dividing 3833 by 421, we get 9 with a remainder of 44.
The next digit of our result is 9. 
Result so far: 17839.0
If we take 3789 away from 3833, we end up with 44.
Include the next digit (3) from the dividend after 44, then repeat: 443 / 421

On to step 8:
The number 421 fits into 443 1 times, leaving a remainder of 22.
Put 1 as the next digit of the answer. 
Result so far: 178391.0
If we take 421 away from 443, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 9:
220 divided by 421 is 0 with a remainder of 220.
Record the quotient 0 as the next digit in the result. 
Result so far: 178391.0
The remainder is 220 after subtracting 0 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Going ahead to step 10:
2200 divided by 421 is 5 with a remainder of 95.
Use 5 as the next digit of our solution. 
Result so far: 178391.05
If we take 2105 away from 2200, we end up with 95.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

On to step 11:
950 divided by 421 is 2 with a remainder of 108.
Use 2 as the next digit of our solution. 
Result so far: 178391.052
Subtract 842 from 950 to get 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

Step 12:
421 can be fit into 1080 2 times, resulting in a remainder of 238.
The number 2 becomes the next digit in our result. 
Result so far: 178391.0522
Subtract 842 from 1080 to get 238.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

The final outcome is 178391.0522, with a leftover of 0.00238.