21604232 ÷ 478 
We want to figure out the number of times 21604232 can be divided by 478.

Step 1:
478 can be fit into 2 0 times, resulting in a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 478

On to step 2:
If we divide 21 by 478, we get 0 and a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 21 to get 21.
Append the next digit (6) from the dividend to 21 and continue with: 216 / 478

Moving on to step 3:
478 goes into 216 0 times with a remainder of 216.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 216, we end up with 216.
Append the next digit (0) from the dividend to 216 and continue with: 2160 / 478

Let's proceed to step 4:
If we divide 2160 by 478, we get 4 and a remainder of 248.
The next digit of our result is 4. 
Result so far: 4.0
If we take 1912 away from 2160, we end up with 248.
Fetch the next digit (4) from the dividend, attach it to 248 and continue: 2484 / 478

Moving on to step 5:
2484 divided by 478 is 5 with a remainder of 94.
Put 5 as the next digit of the answer. 
Result so far: 45.0
The remainder is 94 after subtracting 2390 from 2484.
Fetch the next digit (2) from the dividend, attach it to 94 and continue: 942 / 478

Going ahead to step 6:
478 can be fit into 942 1 times, resulting in a remainder of 464.
The number 1 becomes the next digit in our result. 
Result so far: 451.0
Subtracting 478 from 942 leaves us with 464.
Append the next digit (3) from the dividend to 464 and continue with: 4643 / 478

Step 7:
If we divide 4643 by 478, we get 9 and a remainder of 341.
The number 9 becomes the next digit in our result. 
Result so far: 4519.0
If we subtract 4302 from 4643, we get 341.
Take the next digit (2) from the dividend and append it to 341, then repeat: 3412 / 478

Let's proceed to step 8:
3412 divided by 478 is 7 with a remainder of 66.
Record the quotient 7 as the next digit in the result. 
Result so far: 45197.0
The remainder is 66 after subtracting 3346 from 3412.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Moving on to step 9:
When dividing 660 by 478, we get 1 with a remainder of 182.
The next digit of our result is 1. 
Result so far: 45197.1
Subtracting 478 from 660 leaves us with 182.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1820, and continue the process.

Step 10:
1820 divided by 478 is 3 with a remainder of 386.
Record the quotient 3 as the next digit in the result. 
Result so far: 45197.13
Deduct 1434 from 1820 and we're left with 386.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3860, and continue the process.

Let's proceed to step 11:
The number 478 fits into 3860 8 times, leaving a remainder of 36.
Write down 8 as next digit of the result. 
Result so far: 45197.138
If we take 3824 away from 3860, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 12:
The number 478 fits into 360 0 times, leaving a remainder of 360.
Put 0 as the next digit of the answer. 
Result so far: 45197.138
If we take 0 away from 360, we end up with 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

On to step 13:
The number 478 fits into 3600 7 times, leaving a remainder of 254.
Put 7 as the next digit of the answer. 
Result so far: 45197.13807
If we subtract 3346 from 3600, we get 254.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

Moving on to step 14:
The number 478 fits into 2540 5 times, leaving a remainder of 150.
The number 5 becomes the next digit in our result. 
Result so far: 45197.138075
Deduct 2390 from 2540 and we're left with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Step 15:
478 can be fit into 1500 3 times, resulting in a remainder of 66.
The next digit of our result is 3. 
Result so far: 45197.1380753
If we take 1434 away from 1500, we end up with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Moving on to step 16:
The number 478 fits into 660 1 times, leaving a remainder of 182.
The next digit of our result is 1. 
Result so far: 45197.13807531
Subtract 478 from 660 to get 182.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1820, and continue the process.

In conclusion, the division gives 45197.13807531 with a balance of 1.82e-07.