We're dividing 37442920 by 21 
We want to figure out the number of times 37442920 can be divided by 21.

Let's proceed to step 1:
21 can be fit into 3 0 times, resulting in a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Take the next digit (7) from the dividend and append it to 3, then repeat: 37 / 21

Moving on to step 2:
The number 21 fits into 37 1 times, leaving a remainder of 16.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 21 from 37 leaves us with 16.
Take the next digit (4) from the dividend and append it to 16, then repeat: 164 / 21

Going ahead to step 3:
When dividing 164 by 21, we get 7 with a remainder of 17.
The number 7 becomes the next digit in our result. 
Result so far: 17.0
If we subtract 147 from 164, we get 17.
Bring next digit (4) of the dividend behind the 17 and repeat the process: 174 / 21

On to step 4:
The number 21 fits into 174 8 times, leaving a remainder of 6.
Use 8 as the next digit of our solution. 
Result so far: 178.0
The remainder is 6 after subtracting 168 from 174.
Append the next digit (2) from the dividend to 6 and continue with: 62 / 21

Advancing to step 5:
When dividing 62 by 21, we get 2 with a remainder of 20.
Write down 2 as next digit of the result. 
Result so far: 1782.0
If we subtract 42 from 62, we get 20.
Include the next digit (9) from the dividend after 20, then repeat: 209 / 21

Going ahead to step 6:
209 divided by 21 is 9 with a remainder of 20.
Write down 9 as next digit of the result. 
Result so far: 17829.0
Deduct 189 from 209 and we're left with 20.
Append the next digit (2) from the dividend to 20 and continue with: 202 / 21

Going ahead to step 7:
When dividing 202 by 21, we get 9 with a remainder of 13.
Use 9 as the next digit of our solution. 
Result so far: 178299.0
Subtracting 189 from 202 leaves us with 13.
Append the next digit (0) from the dividend to 13 and continue with: 130 / 21

On to step 8:
If we divide 130 by 21, we get 6 and a remainder of 4.
The next digit of our result is 6. 
Result so far: 1782996.0
If we take 126 away from 130, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 9:
The number 21 fits into 40 1 times, leaving a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 1782996.1
If we take 21 away from 40, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Let's proceed to step 10:
If we divide 190 by 21, we get 9 and a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 1782996.19
If we subtract 189 from 190, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 11:
If we divide 10 by 21, we get 0 and a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 1782996.19
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 12:
When dividing 100 by 21, we get 4 with a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 1782996.1904
Deduct 84 from 100 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 13:
160 divided by 21 is 7 with a remainder of 13.
The next digit of our result is 7. 
Result so far: 1782996.19047
Subtract 147 from 160 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 14:
130 divided by 21 is 6 with a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 1782996.190476
Subtract 126 from 130 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 15:
If we divide 40 by 21, we get 1 and a remainder of 19.
Record the quotient 1 as the next digit in the result. 
Result so far: 1782996.1904761
If we take 21 away from 40, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Let's proceed to step 16:
21 can be fit into 190 9 times, resulting in a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 1782996.19047619
Subtracting 189 from 190 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

After the division, we end up with 1782996.19047619 and a remainder of 1e-09.