Let's divide 17404934 by 421
We want to figure out the number of times 17404934 can be divided by 421.

Moving on to step 1:
The number 421 fits into 1 0 times, leaving a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Bring next digit (7) of the dividend behind the 1 and repeat the process: 17 / 421

On to step 2:
When dividing 17 by 421, we get 0 with a remainder of 17.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 17, we end up with 17.
Take the next digit (4) from the dividend and append it to 17, then repeat: 174 / 421

Going ahead to step 3:
When dividing 174 by 421, we get 0 with a remainder of 174.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 174, we get 174.
Take the next digit (0) from the dividend and append it to 174, then repeat: 1740 / 421

Step 4:
421 can be fit into 1740 4 times, resulting in a remainder of 56.
Write down 4 as next digit of the result. 
Result so far: 4.0
The remainder is 56 after subtracting 1684 from 1740.
Append the next digit (4) from the dividend to 56 and continue with: 564 / 421

On to step 5:
When dividing 564 by 421, we get 1 with a remainder of 143.
Put 1 as the next digit of the answer. 
Result so far: 41.0
If we take 421 away from 564, we end up with 143.
Fetch the next digit (9) from the dividend, attach it to 143 and continue: 1439 / 421

Moving on to step 6:
If we divide 1439 by 421, we get 3 and a remainder of 176.
Write down 3 as next digit of the result. 
Result so far: 413.0
The remainder is 176 after subtracting 1263 from 1439.
Fetch the next digit (3) from the dividend, attach it to 176 and continue: 1763 / 421

Step 7:
The number 421 fits into 1763 4 times, leaving a remainder of 79.
Record the quotient 4 as the next digit in the result. 
Result so far: 4134.0
The remainder is 79 after subtracting 1684 from 1763.
Fetch the next digit (4) from the dividend, attach it to 79 and continue: 794 / 421

Let's proceed to step 8:
421 can be fit into 794 1 times, resulting in a remainder of 373.
Write down 1 as next digit of the result. 
Result so far: 41341.0
If we take 421 away from 794, we end up with 373.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3730, and continue the process.

Moving on to step 9:
The number 421 fits into 3730 8 times, leaving a remainder of 362.
Record the quotient 8 as the next digit in the result. 
Result so far: 41341.8
Subtracting 3368 from 3730 leaves us with 362.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3620, and continue the process.

Going ahead to step 10:
When dividing 3620 by 421, we get 8 with a remainder of 252.
The number 8 becomes the next digit in our result. 
Result so far: 41341.88
If we take 3368 away from 3620, we end up with 252.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2520, and continue the process.

In conclusion, the division gives 41341.88 with a balance of 0.252.