Let's divide 307973 by 21
Let's see how many times 21 fits into 307973.

Let's proceed to step 1:
When dividing 3 by 21, we get 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Grab the next digit (0) from the dividend, add it to 3, then carry on: 30 / 21

Advancing to step 2:
If we divide 30 by 21, we get 1 and a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 21 away from 30, we end up with 9.
Fetch the next digit (7) from the dividend, attach it to 9 and continue: 97 / 21

Going ahead to step 3:
97 divided by 21 is 4 with a remainder of 13.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
If we take 84 away from 97, we end up with 13.
Fetch the next digit (9) from the dividend, attach it to 13 and continue: 139 / 21

Advancing to step 4:
21 can be fit into 139 6 times, resulting in a remainder of 13.
Use 6 as the next digit of our solution. 
Result so far: 146.0
Deduct 126 from 139 and we're left with 13.
Take the next digit (7) from the dividend and append it to 13, then repeat: 137 / 21

Let's proceed to step 5:
When dividing 137 by 21, we get 6 with a remainder of 11.
Write down 6 as next digit of the result. 
Result so far: 1466.0
Deduct 126 from 137 and we're left with 11.
Grab the next digit (3) from the dividend, add it to 11, then carry on: 113 / 21

On to step 6:
113 divided by 21 is 5 with a remainder of 8.
The number 5 becomes the next digit in our result. 
Result so far: 14665.0
If we take 105 away from 113, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 7:
80 divided by 21 is 3 with a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 14665.3
Deduct 63 from 80 and we're left 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.

Let's proceed to step 8:
When dividing 170 by 21, we get 8 with a remainder of 2.
Use 8 as the next digit of our solution. 
Result so far: 14665.38
If we subtract 168 from 170, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 9:
21 can be fit into 20 0 times, resulting in a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 14665.38
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 10:
21 goes into 200 9 times with a remainder of 11.
The next digit of our result is 9. 
Result so far: 14665.3809
Subtract 189 from 200 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 11:
If we divide 110 by 21, we get 5 and a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 14665.38095
Deduct 105 from 110 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 12:
21 goes into 50 2 times with a remainder of 8.
The next digit of our result is 2. 
Result so far: 14665.380952
Deduct 42 from 50 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 13:
21 can be fit into 80 3 times, resulting in a remainder of 17.
The next digit of our result is 3. 
Result so far: 14665.3809523
If we subtract 63 from 80, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 14:
The number 21 fits into 170 8 times, leaving a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 14665.38095238
If we take 168 away from 170, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Our division results in 14665.38095238 with a remaining 2e-09.