We divide 361453 by 21
We're looking to find how many times 21 goes into 361453.

Let's proceed to step 1:
If we divide 3 by 21, we get 0 and a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Bring next digit (6) of the dividend behind the 3 and repeat the process: 36 / 21

Moving on to step 2:
When dividing 36 by 21, we get 1 with a remainder of 15.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 21 away from 36, we end up with 15.
Take the next digit (1) from the dividend and append it to 15, then repeat: 151 / 21

On to step 3:
If we divide 151 by 21, we get 7 and a remainder of 4.
Record the quotient 7 as the next digit in the result. 
Result so far: 17.0
Deduct 147 from 151 and we're left with 4.
Include the next digit (4) from the dividend after 4, then repeat: 44 / 21

Let's proceed to step 4:
The number 21 fits into 44 2 times, leaving a remainder of 2.
Record the quotient 2 as the next digit in the result. 
Result so far: 172.0
Subtracting 42 from 44 leaves us with 2.
Bring next digit (5) of the dividend behind the 2 and repeat the process: 25 / 21

Step 5:
21 can be fit into 25 1 times, resulting in a remainder of 4.
The next digit of our result is 1. 
Result so far: 1721.0
The remainder is 4 after subtracting 21 from 25.
Fetch the next digit (3) from the dividend, attach it to 4 and continue: 43 / 21

On to step 6:
21 goes into 43 2 times with a remainder of 1.
The next digit of our result is 2. 
Result so far: 17212.0
Subtract 42 from 43 to 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.

Step 7:
The number 21 fits into 10 0 times, leaving a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 17212.0
Subtracting 0 from 10 leaves us with 10.
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 8:
When dividing 100 by 21, we get 4 with a remainder of 16.
The next digit of our result is 4. 
Result so far: 17212.04
If we take 84 away from 100, we end up 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.

Going ahead to step 9:
When dividing 160 by 21, we get 7 with a remainder of 13.
Record the quotient 7 as the next digit in the result. 
Result so far: 17212.047
If we subtract 147 from 160, we 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 10:
The number 21 fits into 130 6 times, leaving a remainder of 4.
The next digit of our result is 6. 
Result so far: 17212.0476
If we subtract 126 from 130, we 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.

Let's proceed to step 11:
21 goes into 40 1 times with a remainder of 19.
Put 1 as the next digit of the answer. 
Result so far: 17212.04761
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.

On to step 12:
190 divided by 21 is 9 with a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 17212.047619
Deduct 189 from 190 and we're left 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.

Going ahead to step 13:
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: 17212.047619
Deduct 0 from 10 and we're left with 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 14:
21 can be fit into 100 4 times, resulting in a remainder of 16.
The next digit of our result is 4. 
Result so far: 17212.04761904
Subtracting 84 from 100 leaves us 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.

In conclusion, the division gives 17212.04761904 with a balance of 1.6e-08.