We look at the division of 21237642 by 445 
We want to figure out the number of times 21237642 can be divided by 445.

Let's proceed to step 1:
2 divided by 445 is 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 445

Moving on to step 2:
445 can be fit into 21 0 times, resulting in a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 21 to get 21.
Grab the next digit (2) from the dividend, add it to 21, then carry on: 212 / 445

Step 3:
212 divided by 445 is 0 with a remainder of 212.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 212 after subtracting 0 from 212.
Grab the next digit (3) from the dividend, add it to 212, then carry on: 2123 / 445

Advancing to step 4:
When dividing 2123 by 445, we get 4 with a remainder of 343.
The next digit of our result is 4. 
Result so far: 4.0
Subtract 1780 from 2123 to get 343.
Append the next digit (7) from the dividend to 343 and continue with: 3437 / 445

Going ahead to step 5:
3437 divided by 445 is 7 with a remainder of 322.
Put 7 as the next digit of the answer. 
Result so far: 47.0
If we take 3115 away from 3437, we end up with 322.
Bring next digit (6) of the dividend behind the 322 and repeat the process: 3226 / 445

Step 6:
If we divide 3226 by 445, we get 7 and a remainder of 111.
Put 7 as the next digit of the answer. 
Result so far: 477.0
If we subtract 3115 from 3226, we get 111.
Append the next digit (4) from the dividend to 111 and continue with: 1114 / 445

Moving on to step 7:
The number 445 fits into 1114 2 times, leaving a remainder of 224.
The number 2 becomes the next digit in our result. 
Result so far: 4772.0
Subtract 890 from 1114 to get 224.
Take the next digit (2) from the dividend and append it to 224, then repeat: 2242 / 445

Advancing to step 8:
If we divide 2242 by 445, we get 5 and a remainder of 17.
Write down 5 as next digit of the result. 
Result so far: 47725.0
If we take 2225 away from 2242, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Moving on to step 9:
170 divided by 445 is 0 with a remainder of 170.
Write down 0 as next digit of the result. 
Result so far: 47725.0
Subtract 0 from 170 to get 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Step 10:
445 goes into 1700 3 times with a remainder of 365.
Put 3 as the next digit of the answer. 
Result so far: 47725.03
The remainder is 365 after subtracting 1335 from 1700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3650, and continue the process.

Advancing to step 11:
When dividing 3650 by 445, we get 8 with a remainder of 90.
Use 8 as the next digit of our solution. 
Result so far: 47725.038
The remainder is 90 after subtracting 3560 from 3650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Moving on to step 12:
When dividing 900 by 445, we get 2 with a remainder of 10.
The next digit of our result is 2. 
Result so far: 47725.0382
The remainder is 10 after subtracting 890 from 900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 13:
445 can be fit into 100 0 times, resulting in a remainder of 100.
The number 0 becomes the next digit in our result. 
Result so far: 47725.0382
Subtract 0 from 100 to get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Let's proceed to step 14:
445 goes into 1000 2 times with a remainder of 110.
Put 2 as the next digit of the answer. 
Result so far: 47725.038202
If we take 890 away from 1000, we end up with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Let's proceed to step 15:
If we divide 1100 by 445, we get 2 and a remainder of 210.
Record the quotient 2 as the next digit in the result. 
Result so far: 47725.0382022
Deduct 890 from 1100 and we're left with 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

After the division, we end up with 47725.0382022 and a remainder of 2.1e-06.