We divide 400451 by 42
We're looking to find how many times 42 goes into 400451.

Step 1:
When dividing 4 by 42, we get 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Bring next digit (0) of the dividend behind the 4 and repeat the process: 40 / 42

On to step 2:
42 goes into 40 0 times with a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 40, we end up with 40.
Take the next digit (0) from the dividend and append it to 40, then repeat: 400 / 42

Advancing to step 3:
When dividing 400 by 42, we get 9 with a remainder of 22.
Put 9 as the next digit of the answer. 
Result so far: 9.0
Subtract 378 from 400 to get 22.
Grab the next digit (4) from the dividend, add it to 22, then carry on: 224 / 42

Moving on to step 4:
42 can be fit into 224 5 times, resulting in a remainder of 14.
Write down 5 as next digit of the result. 
Result so far: 95.0
Subtracting 210 from 224 leaves us with 14.
Include the next digit (5) from the dividend after 14, then repeat: 145 / 42

Let's proceed to step 5:
145 divided by 42 is 3 with a remainder of 19.
Record the quotient 3 as the next digit in the result. 
Result so far: 953.0
If we subtract 126 from 145, we get 19.
Include the next digit (1) from the dividend after 19, then repeat: 191 / 42

Let's proceed to step 6:
42 can be fit into 191 4 times, resulting in a remainder of 23.
Use 4 as the next digit of our solution. 
Result so far: 9534.0
Subtract 168 from 191 to get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Moving on to step 7:
When dividing 230 by 42, we get 5 with a remainder of 20.
Record the quotient 5 as the next digit in the result. 
Result so far: 9534.5
Subtract 210 from 230 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 8:
If we divide 200 by 42, we get 4 and a remainder of 32.
The number 4 becomes the next digit in our result. 
Result so far: 9534.54
Deduct 168 from 200 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 9:
320 divided by 42 is 7 with a remainder of 26.
Write down 7 as next digit of the result. 
Result so far: 9534.547
Subtract 294 from 320 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

On to step 10:
260 divided by 42 is 6 with a remainder of 8.
Write down 6 as next digit of the result. 
Result so far: 9534.5476
Deduct 252 from 260 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 11:
When dividing 80 by 42, we get 1 with a remainder of 38.
Write down 1 as next digit of the result. 
Result so far: 9534.54761
Subtract 42 from 80 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 12:
380 divided by 42 is 9 with a remainder of 2.
Write down 9 as next digit of the result. 
Result so far: 9534.547619
The remainder is 2 after subtracting 378 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 13:
42 can be fit into 20 0 times, resulting in a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 9534.547619
Subtracting 0 from 20 leaves us 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.

Going ahead to step 14:
200 divided by 42 is 4 with a remainder of 32.
Use 4 as the next digit of our solution. 
Result so far: 9534.54761904
If we subtract 168 from 200, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

In conclusion, the division gives 9534.54761904 with a balance of 3.2e-08.