We're dividing 42580209 by 453 
We're looking to find how many times 453 goes into 42580209.

Step 1:
When dividing 4 by 453, we get 0 with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 453

Advancing to step 2:
453 can be fit into 42 0 times, resulting in a remainder of 42.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 42 to get 42.
Fetch the next digit (5) from the dividend, attach it to 42 and continue: 425 / 453

Let's proceed to step 3:
453 can be fit into 425 0 times, resulting in a remainder of 425.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 425 after subtracting 0 from 425.
Include the next digit (8) from the dividend after 425, then repeat: 4258 / 453

Moving on to step 4:
453 goes into 4258 9 times with a remainder of 181.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
The remainder is 181 after subtracting 4077 from 4258.
Take the next digit (0) from the dividend and append it to 181, then repeat: 1810 / 453

Going ahead to step 5:
When dividing 1810 by 453, we get 3 with a remainder of 451.
Record the quotient 3 as the next digit in the result. 
Result so far: 93.0
Subtract 1359 from 1810 to get 451.
Include the next digit (2) from the dividend after 451, then repeat: 4512 / 453

Step 6:
If we divide 4512 by 453, we get 9 and a remainder of 435.
The next digit of our result is 9. 
Result so far: 939.0
Subtract 4077 from 4512 to get 435.
Grab the next digit (0) from the dividend, add it to 435, then carry on: 4350 / 453

Moving on to step 7:
When dividing 4350 by 453, we get 9 with a remainder of 273.
Put 9 as the next digit of the answer. 
Result so far: 9399.0
Subtracting 4077 from 4350 leaves us with 273.
Fetch the next digit (9) from the dividend, attach it to 273 and continue: 2739 / 453

Advancing to step 8:
2739 divided by 453 is 6 with a remainder of 21.
Write down 6 as next digit of the result. 
Result so far: 93996.0
Deduct 2718 from 2739 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Step 9:
The number 453 fits into 210 0 times, leaving a remainder of 210.
Use 0 as the next digit of our solution. 
Result so far: 93996.0
If we take 0 away from 210, we end up with 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Let's proceed to step 10:
2100 divided by 453 is 4 with a remainder of 288.
Write down 4 as next digit of the result. 
Result so far: 93996.04
Subtracting 1812 from 2100 leaves us with 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Moving on to step 11:
453 goes into 2880 6 times with a remainder of 162.
The next digit of our result is 6. 
Result so far: 93996.046
Deduct 2718 from 2880 and we're left with 162.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1620, and continue the process.

On to step 12:
The number 453 fits into 1620 3 times, leaving a remainder of 261.
The number 3 becomes the next digit in our result. 
Result so far: 93996.0463
Subtract 1359 from 1620 to get 261.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2610, and continue the process.

Going ahead to step 13:
453 goes into 2610 5 times with a remainder of 345.
The next digit of our result is 5. 
Result so far: 93996.04635
If we subtract 2265 from 2610, we get 345.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3450, and continue the process.

On to step 14:
When dividing 3450 by 453, we get 7 with a remainder of 279.
Write down 7 as next digit of the result. 
Result so far: 93996.046357
Deduct 3171 from 3450 and we're left with 279.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2790, and continue the process.

On to step 15:
The number 453 fits into 2790 6 times, leaving a remainder of 72.
Put 6 as the next digit of the answer. 
Result so far: 93996.0463576
Deduct 2718 from 2790 and we're left with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Advancing to step 16:
453 can be fit into 720 1 times, resulting in a remainder of 267.
Record the quotient 1 as the next digit in the result. 
Result so far: 93996.04635761
The remainder is 267 after subtracting 453 from 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2670, and continue the process.

The final outcome is 93996.04635761, with a leftover of 2.67e-07.