45256291 ÷ 455 
We want to figure out the number of times 45256291 can be divided by 455.

Step 1:
455 goes into 4 0 times with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Fetch the next digit (5) from the dividend, attach it to 4 and continue: 45 / 455

Going ahead to step 2:
455 goes into 45 0 times with a remainder of 45.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 45 leaves us with 45.
Bring next digit (2) of the dividend behind the 45 and repeat the process: 452 / 455

Advancing to step 3:
455 goes into 452 0 times with a remainder of 452.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 452 to get 452.
Fetch the next digit (5) from the dividend, attach it to 452 and continue: 4525 / 455

Moving on to step 4:
455 goes into 4525 9 times with a remainder of 430.
The next digit of our result is 9. 
Result so far: 9.0
Subtract 4095 from 4525 to get 430.
Grab the next digit (6) from the dividend, add it to 430, then carry on: 4306 / 455

Let's proceed to step 5:
455 can be fit into 4306 9 times, resulting in a remainder of 211.
Write down 9 as next digit of the result. 
Result so far: 99.0
The remainder is 211 after subtracting 4095 from 4306.
Append the next digit (2) from the dividend to 211 and continue with: 2112 / 455

Let's proceed to step 6:
455 goes into 2112 4 times with a remainder of 292.
Use 4 as the next digit of our solution. 
Result so far: 994.0
Subtract 1820 from 2112 to get 292.
Take the next digit (9) from the dividend and append it to 292, then repeat: 2929 / 455

Step 7:
2929 divided by 455 is 6 with a remainder of 199.
The next digit of our result is 6. 
Result so far: 9946.0
The remainder is 199 after subtracting 2730 from 2929.
Append the next digit (1) from the dividend to 199 and continue with: 1991 / 455

Advancing to step 8:
The number 455 fits into 1991 4 times, leaving a remainder of 171.
The number 4 becomes the next digit in our result. 
Result so far: 99464.0
If we subtract 1820 from 1991, we get 171.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1710, and continue the process.

Moving on to step 9:
When dividing 1710 by 455, we get 3 with a remainder of 345.
The number 3 becomes the next digit in our result. 
Result so far: 99464.3
The remainder is 345 after subtracting 1365 from 1710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3450, and continue the process.

Going ahead to step 10:
3450 divided by 455 is 7 with a remainder of 265.
Put 7 as the next digit of the answer. 
Result so far: 99464.37
If we take 3185 away from 3450, we end up with 265.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2650, and continue the process.

Let's proceed to step 11:
455 goes into 2650 5 times with a remainder of 375.
Use 5 as the next digit of our solution. 
Result so far: 99464.375
Subtracting 2275 from 2650 leaves us with 375.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

Step 12:
When dividing 3750 by 455, we get 8 with a remainder of 110.
The next digit of our result is 8. 
Result so far: 99464.3758
The remainder is 110 after subtracting 3640 from 3750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Going ahead to step 13:
If we divide 1100 by 455, we get 2 and a remainder of 190.
Record the quotient 2 as the next digit in the result. 
Result so far: 99464.37582
Subtract 910 from 1100 to get 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Step 14:
455 can be fit into 1900 4 times, resulting in a remainder of 80.
The next digit of our result is 4. 
Result so far: 99464.375824
If we subtract 1820 from 1900, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Advancing to step 15:
800 divided by 455 is 1 with a remainder of 345.
Put 1 as the next digit of the answer. 
Result so far: 99464.3758241
The remainder is 345 after subtracting 455 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3450, and continue the process.

Going ahead to step 16:
455 goes into 3450 7 times with a remainder of 265.
Put 7 as the next digit of the answer. 
Result so far: 99464.37582417
If we take 3185 away from 3450, we end up with 265.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2650, and continue the process.

The final outcome is 99464.37582417, with a leftover of 2.65e-07.