368357 ÷ 21 
We want to figure out the number of times 368357 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.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Include the next digit (6) from the dividend after 3, then repeat: 36 / 21

Going ahead to step 2:
36 divided by 21 is 1 with a remainder of 15.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 21 from 36 leaves us with 15.
Fetch the next digit (8) from the dividend, attach it to 15 and continue: 158 / 21

Moving on to step 3:
158 divided by 21 is 7 with a remainder of 11.
Put 7 as the next digit of the answer. 
Result so far: 17.0
Subtracting 147 from 158 leaves us with 11.
Fetch the next digit (3) from the dividend, attach it to 11 and continue: 113 / 21

Going ahead to step 4:
21 goes into 113 5 times with a remainder of 8.
Record the quotient 5 as the next digit in the result. 
Result so far: 175.0
The remainder is 8 after subtracting 105 from 113.
Append the next digit (5) from the dividend to 8 and continue with: 85 / 21

Let's proceed to step 5:
The number 21 fits into 85 4 times, leaving a remainder of 1.
The number 4 becomes the next digit in our result. 
Result so far: 1754.0
If we subtract 84 from 85, we get 1.
Fetch the next digit (7) from the dividend, attach it to 1 and continue: 17 / 21

On to step 6:
If we divide 17 by 21, we get 0 and a remainder of 17.
Write down 0 as next digit of the result. 
Result so far: 17540.0
If we subtract 0 from 17, 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.

Advancing to step 7:
21 goes into 170 8 times with a remainder of 2.
The number 8 becomes the next digit in our result. 
Result so far: 17540.8
Subtracting 168 from 170 leaves us 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.

Step 8:
The number 21 fits into 20 0 times, leaving a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 17540.8
Deduct 0 from 20 and we're left 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.

Moving on to step 9:
When dividing 200 by 21, we get 9 with a remainder of 11.
Put 9 as the next digit of the answer. 
Result so far: 17540.809
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.

Advancing to step 10:
If we divide 110 by 21, we get 5 and a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 17540.8095
If we subtract 105 from 110, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 11:
21 can be fit into 50 2 times, resulting in a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 17540.80952
The remainder is 8 after subtracting 42 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 12:
21 can be fit into 80 3 times, resulting in a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 17540.809523
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.

Let's proceed to step 13:
170 divided by 21 is 8 with a remainder of 2.
The number 8 becomes the next digit in our result. 
Result so far: 17540.8095238
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.

Going ahead to step 14:
21 goes into 20 0 times with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 17540.8095238
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.

The quotient of the division is 17540.8095238, and the remainder is 2e-08.