We look at the division of 450210 by 42 
We want to divide 450210 by 42.

Let's proceed to step 1:
4 divided by 42 is 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Grab the next digit (5) from the dividend, add it to 4, then carry on: 45 / 42

Advancing to step 2:
The number 42 fits into 45 1 times, leaving a remainder of 3.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 42 away from 45, we end up with 3.
Include the next digit (0) from the dividend after 3, then repeat: 30 / 42

Step 3:
30 divided by 42 is 0 with a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 10.0
The remainder is 30 after subtracting 0 from 30.
Append the next digit (2) from the dividend to 30 and continue with: 302 / 42

Step 4:
If we divide 302 by 42, we get 7 and a remainder of 8.
Write down 7 as next digit of the result. 
Result so far: 107.0
The remainder is 8 after subtracting 294 from 302.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 42

Moving on to step 5:
When dividing 81 by 42, we get 1 with a remainder of 39.
Put 1 as the next digit of the answer. 
Result so far: 1071.0
Deduct 42 from 81 and we're left with 39.
Include the next digit (0) from the dividend after 39, then repeat: 390 / 42

Step 6:
390 divided by 42 is 9 with a remainder of 12.
The number 9 becomes the next digit in our result. 
Result so far: 10719.0
Deduct 378 from 390 and we're left with 12.
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:
If we divide 120 by 42, we get 2 and a remainder of 36.
Record the quotient 2 as the next digit in the result. 
Result so far: 10719.2
Subtract 84 from 120 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 8:
The number 42 fits into 360 8 times, leaving a remainder of 24.
Use 8 as the next digit of our solution. 
Result so far: 10719.28
Subtracting 336 from 360 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 9:
When dividing 240 by 42, we get 5 with a remainder of 30.
The next digit of our result is 5. 
Result so far: 10719.285
If we subtract 210 from 240, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 10:
42 goes into 300 7 times with a remainder of 6.
The next digit of our result is 7. 
Result so far: 10719.2857
If we subtract 294 from 300, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 11:
If we divide 60 by 42, we get 1 and a remainder of 18.
Use 1 as the next digit of our solution. 
Result so far: 10719.28571
If we subtract 42 from 60, we 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.

On to step 12:
If we divide 180 by 42, we get 4 and a remainder of 12.
The next digit of our result is 4. 
Result so far: 10719.285714
Subtracting 168 from 180 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 13:
If we divide 120 by 42, we get 2 and a remainder of 36.
Write down 2 as next digit of the result. 
Result so far: 10719.2857142
Deduct 84 from 120 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 14:
42 goes into 360 8 times with a remainder of 24.
Use 8 as the next digit of our solution. 
Result so far: 10719.28571428
Deduct 336 from 360 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

In conclusion, the division gives 10719.28571428 with a balance of 2.4e-08.