451519 ÷ 42 
Let's see how many times 42 fits into 451519.

Going ahead to step 1:
42 goes into 4 0 times with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Bring next digit (5) of the dividend behind the 4 and repeat the process: 45 / 42

Advancing to step 2:
42 can be fit into 45 1 times, resulting in a remainder of 3.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 42 from 45 leaves us with 3.
Include the next digit (1) from the dividend after 3, then repeat: 31 / 42

Let's proceed to step 3:
42 can be fit into 31 0 times, resulting in a remainder of 31.
Write down 0 as next digit of the result. 
Result so far: 10.0
Deduct 0 from 31 and we're left with 31.
Take the next digit (5) from the dividend and append it to 31, then repeat: 315 / 42

Step 4:
The number 42 fits into 315 7 times, leaving a remainder of 21.
Use 7 as the next digit of our solution. 
Result so far: 107.0
If we subtract 294 from 315, we get 21.
Include the next digit (1) from the dividend after 21, then repeat: 211 / 42

Moving on to step 5:
If we divide 211 by 42, we get 5 and a remainder of 1.
Use 5 as the next digit of our solution. 
Result so far: 1075.0
If we take 210 away from 211, we end up with 1.
Grab the next digit (9) from the dividend, add it to 1, then carry on: 19 / 42

Advancing to step 6:
42 goes into 19 0 times with a remainder of 19.
Write down 0 as next digit of the result. 
Result so far: 10750.0
If we take 0 away from 19, 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 7:
42 can be fit into 190 4 times, resulting in a remainder of 22.
The number 4 becomes the next digit in our result. 
Result so far: 10750.4
Subtracting 168 from 190 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 8:
When dividing 220 by 42, we get 5 with a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 10750.45
Subtracting 210 from 220 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 9:
When dividing 100 by 42, we get 2 with a remainder of 16.
The next digit of our result is 2. 
Result so far: 10750.452
Subtract 84 from 100 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 10:
When dividing 160 by 42, we get 3 with a remainder of 34.
Write down 3 as next digit of the result. 
Result so far: 10750.4523
If we take 126 away from 160, we end up with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

On to step 11:
The number 42 fits into 340 8 times, leaving a remainder of 4.
Write down 8 as next digit of the result. 
Result so far: 10750.45238
Subtract 336 from 340 to 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.

Advancing to step 12:
42 can be fit into 40 0 times, resulting in a remainder of 40.
The next digit of our result is 0. 
Result so far: 10750.45238
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 13:
400 divided by 42 is 9 with a remainder of 22.
Put 9 as the next digit of the answer. 
Result so far: 10750.4523809
If we take 378 away from 400, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 14:
42 goes into 220 5 times with a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 10750.45238095
Deduct 210 from 220 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.

In conclusion, the division gives 10750.45238095 with a balance of 1e-08.