99123115 ÷ 457 
Our goal is to divide 99123115 by 457.

On to step 1:
457 goes into 9 0 times with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 457

Going ahead to step 2:
If we divide 99 by 457, we get 0 and a remainder of 99.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 99 after subtracting 0 from 99.
Take the next digit (1) from the dividend and append it to 99, then repeat: 991 / 457

Let's proceed to step 3:
457 goes into 991 2 times with a remainder of 77.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtracting 914 from 991 leaves us with 77.
Take the next digit (2) from the dividend and append it to 77, then repeat: 772 / 457

On to step 4:
457 goes into 772 1 times with a remainder of 315.
The number 1 becomes the next digit in our result. 
Result so far: 21.0
If we subtract 457 from 772, we get 315.
Grab the next digit (3) from the dividend, add it to 315, then carry on: 3153 / 457

On to step 5:
If we divide 3153 by 457, we get 6 and a remainder of 411.
The number 6 becomes the next digit in our result. 
Result so far: 216.0
Subtract 2742 from 3153 to get 411.
Take the next digit (1) from the dividend and append it to 411, then repeat: 4111 / 457

Advancing to step 6:
457 goes into 4111 8 times with a remainder of 455.
Write down 8 as next digit of the result. 
Result so far: 2168.0
Subtract 3656 from 4111 to get 455.
Fetch the next digit (1) from the dividend, attach it to 455 and continue: 4551 / 457

Step 7:
457 can be fit into 4551 9 times, resulting in a remainder of 438.
Put 9 as the next digit of the answer. 
Result so far: 21689.0
If we take 4113 away from 4551, we end up with 438.
Fetch the next digit (5) from the dividend, attach it to 438 and continue: 4385 / 457

Moving on to step 8:
When dividing 4385 by 457, we get 9 with a remainder of 272.
Use 9 as the next digit of our solution. 
Result so far: 216899.0
Subtracting 4113 from 4385 leaves us with 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Moving on to step 9:
If we divide 2720 by 457, we get 5 and a remainder of 435.
Write down 5 as next digit of the result. 
Result so far: 216899.5
Subtract 2285 from 2720 to get 435.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4350, and continue the process.

Advancing to step 10:
457 can be fit into 4350 9 times, resulting in a remainder of 237.
The next digit of our result is 9. 
Result so far: 216899.59
If we take 4113 away from 4350, we end up with 237.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2370, and continue the process.

Step 11:
The number 457 fits into 2370 5 times, leaving a remainder of 85.
The number 5 becomes the next digit in our result. 
Result so far: 216899.595
Deduct 2285 from 2370 and we're left with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Let's proceed to step 12:
When dividing 850 by 457, we get 1 with a remainder of 393.
The number 1 becomes the next digit in our result. 
Result so far: 216899.5951
If we subtract 457 from 850, we get 393.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3930, and continue the process.

Advancing to step 13:
The number 457 fits into 3930 8 times, leaving a remainder of 274.
Put 8 as the next digit of the answer. 
Result so far: 216899.59518
If we take 3656 away from 3930, we end up with 274.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2740, and continue the process.

Let's proceed to step 14:
The number 457 fits into 2740 5 times, leaving a remainder of 455.
Put 5 as the next digit of the answer. 
Result so far: 216899.595185
Deduct 2285 from 2740 and we're left with 455.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4550, and continue the process.

Advancing to step 15:
When dividing 4550 by 457, we get 9 with a remainder of 437.
Use 9 as the next digit of our solution. 
Result so far: 216899.5951859
Subtract 4113 from 4550 to get 437.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4370, and continue the process.

Moving on to step 16:
457 can be fit into 4370 9 times, resulting in a remainder of 257.
Write down 9 as next digit of the result. 
Result so far: 216899.59518599
The remainder is 257 after subtracting 4113 from 4370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2570, and continue the process.

The quotient of the division is 216899.59518599, and the remainder is 2.57e-07.