293970 ÷ 21 
We want to figure out the number of times 293970 can be divided by 21.

Let's proceed to step 1:
The number 21 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
Subtracting 0 from 2 leaves us with 2.
Bring next digit (9) of the dividend behind the 2 and repeat the process: 29 / 21

On to step 2:
When dividing 29 by 21, we get 1 with a remainder of 8.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 21 away from 29, we end up with 8.
Append the next digit (3) from the dividend to 8 and continue with: 83 / 21

Advancing to step 3:
83 divided by 21 is 3 with a remainder of 20.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
Deduct 63 from 83 and we're left with 20.
Take the next digit (9) from the dividend and append it to 20, then repeat: 209 / 21

Going ahead to step 4:
21 goes into 209 9 times with a remainder of 20.
Record the quotient 9 as the next digit in the result. 
Result so far: 139.0
The remainder is 20 after subtracting 189 from 209.
Include the next digit (7) from the dividend after 20, then repeat: 207 / 21

Going ahead to step 5:
21 goes into 207 9 times with a remainder of 18.
The next digit of our result is 9. 
Result so far: 1399.0
Deduct 189 from 207 and we're left with 18.
Fetch the next digit (0) from the dividend, attach it to 18 and continue: 180 / 21

Going ahead to step 6:
When dividing 180 by 21, we get 8 with a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 13998.0
The remainder is 12 after subtracting 168 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 7:
120 divided by 21 is 5 with a remainder of 15.
The next digit of our result is 5. 
Result so far: 13998.5
If we subtract 105 from 120, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 8:
21 can be fit into 150 7 times, resulting in a remainder of 3.
The number 7 becomes the next digit in our result. 
Result so far: 13998.57
The remainder is 3 after subtracting 147 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 9:
21 can be fit into 30 1 times, resulting in a remainder of 9.
Put 1 as the next digit of the answer. 
Result so far: 13998.571
The remainder is 9 after subtracting 21 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 10:
If we divide 90 by 21, we get 4 and a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 13998.5714
The remainder is 6 after subtracting 84 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 11:
21 can be fit into 60 2 times, resulting in a remainder of 18.
The number 2 becomes the next digit in our result. 
Result so far: 13998.57142
Subtract 42 from 60 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 12:
If we divide 180 by 21, we get 8 and a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 13998.571428
If we subtract 168 from 180, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 13:
The number 21 fits into 120 5 times, leaving a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 13998.5714285
Subtract 105 from 120 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 14:
150 divided by 21 is 7 with a remainder of 3.
The next digit of our result is 7. 
Result so far: 13998.57142857
The remainder is 3 after subtracting 147 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

After the division, we end up with 13998.57142857 and a remainder of 3e-09.