We look at the division of 21349731 by 470 
We want to figure out the number of times 21349731 can be divided by 470.

Let's proceed to step 1:
The number 470 fits into 2 0 times, leaving a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 470

On to step 2:
470 can be fit into 21 0 times, resulting in a remainder of 21.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 21 to get 21.
Take the next digit (3) from the dividend and append it to 21, then repeat: 213 / 470

On to step 3:
The number 470 fits into 213 0 times, leaving a remainder of 213.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 213, we end up with 213.
Append the next digit (4) from the dividend to 213 and continue with: 2134 / 470

Going ahead to step 4:
470 goes into 2134 4 times with a remainder of 254.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Deduct 1880 from 2134 and we're left with 254.
Bring next digit (9) of the dividend behind the 254 and repeat the process: 2549 / 470

Advancing to step 5:
The number 470 fits into 2549 5 times, leaving a remainder of 199.
Record the quotient 5 as the next digit in the result. 
Result so far: 45.0
Deduct 2350 from 2549 and we're left with 199.
Append the next digit (7) from the dividend to 199 and continue with: 1997 / 470

Let's proceed to step 6:
470 goes into 1997 4 times with a remainder of 117.
Record the quotient 4 as the next digit in the result. 
Result so far: 454.0
Subtracting 1880 from 1997 leaves us with 117.
Fetch the next digit (3) from the dividend, attach it to 117 and continue: 1173 / 470

Moving on to step 7:
1173 divided by 470 is 2 with a remainder of 233.
Record the quotient 2 as the next digit in the result. 
Result so far: 4542.0
Subtracting 940 from 1173 leaves us with 233.
Include the next digit (1) from the dividend after 233, then repeat: 2331 / 470

Moving on to step 8:
470 goes into 2331 4 times with a remainder of 451.
Write down 4 as next digit of the result. 
Result so far: 45424.0
If we take 1880 away from 2331, we end up with 451.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4510, and continue the process.

Let's proceed to step 9:
4510 divided by 470 is 9 with a remainder of 280.
Use 9 as the next digit of our solution. 
Result so far: 45424.9
The remainder is 280 after subtracting 4230 from 4510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Advancing to step 10:
2800 divided by 470 is 5 with a remainder of 450.
The number 5 becomes the next digit in our result. 
Result so far: 45424.95
If we subtract 2350 from 2800, we get 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

Advancing to step 11:
4500 divided by 470 is 9 with a remainder of 270.
Write down 9 as next digit of the result. 
Result so far: 45424.959
If we subtract 4230 from 4500, we get 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Moving on to step 12:
470 can be fit into 2700 5 times, resulting in a remainder of 350.
Use 5 as the next digit of our solution. 
Result so far: 45424.9595
Subtract 2350 from 2700 to get 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

On to step 13:
The number 470 fits into 3500 7 times, leaving a remainder of 210.
Put 7 as the next digit of the answer. 
Result so far: 45424.95957
Subtract 3290 from 3500 to get 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Step 14:
470 can be fit into 2100 4 times, resulting in a remainder of 220.
The next digit of our result is 4. 
Result so far: 45424.959574
Deduct 1880 from 2100 and we're left with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

On to step 15:
The number 470 fits into 2200 4 times, leaving a remainder of 320.
Record the quotient 4 as the next digit in the result. 
Result so far: 45424.9595744
Subtracting 1880 from 2200 leaves us with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Our division results in 45424.9595744 with a remaining 3.2e-06.