28587815 ÷ 393 
We're looking to find how many times 393 goes into 28587815.

Advancing to step 1:
393 goes into 2 0 times with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Grab the next digit (8) from the dividend, add it to 2, then carry on: 28 / 393

Advancing to step 2:
When dividing 28 by 393, we get 0 with a remainder of 28.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 28 after subtracting 0 from 28.
Fetch the next digit (5) from the dividend, attach it to 28 and continue: 285 / 393

Moving on to step 3:
The number 393 fits into 285 0 times, leaving a remainder of 285.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 285, we end up with 285.
Bring next digit (8) of the dividend behind the 285 and repeat the process: 2858 / 393

On to step 4:
393 can be fit into 2858 7 times, resulting in a remainder of 107.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we subtract 2751 from 2858, we get 107.
Take the next digit (7) from the dividend and append it to 107, then repeat: 1077 / 393

Advancing to step 5:
If we divide 1077 by 393, we get 2 and a remainder of 291.
The number 2 becomes the next digit in our result. 
Result so far: 72.0
If we subtract 786 from 1077, we get 291.
Fetch the next digit (8) from the dividend, attach it to 291 and continue: 2918 / 393

Moving on to step 6:
393 can be fit into 2918 7 times, resulting in a remainder of 167.
Use 7 as the next digit of our solution. 
Result so far: 727.0
If we take 2751 away from 2918, we end up with 167.
Include the next digit (1) from the dividend after 167, then repeat: 1671 / 393

Advancing to step 7:
If we divide 1671 by 393, we get 4 and a remainder of 99.
Record the quotient 4 as the next digit in the result. 
Result so far: 7274.0
Deduct 1572 from 1671 and we're left with 99.
Fetch the next digit (5) from the dividend, attach it to 99 and continue: 995 / 393

Let's proceed to step 8:
393 can be fit into 995 2 times, resulting in a remainder of 209.
Write down 2 as next digit of the result. 
Result so far: 72742.0
If we take 786 away from 995, we end up with 209.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2090, and continue the process.

Let's proceed to step 9:
393 can be fit into 2090 5 times, resulting in a remainder of 125.
Use 5 as the next digit of our solution. 
Result so far: 72742.5
Subtracting 1965 from 2090 leaves us with 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Step 10:
When dividing 1250 by 393, we get 3 with a remainder of 71.
The number 3 becomes the next digit in our result. 
Result so far: 72742.53
If we take 1179 away from 1250, we end up with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Let's proceed to step 11:
393 goes into 710 1 times with a remainder of 317.
Record the quotient 1 as the next digit in the result. 
Result so far: 72742.531
The remainder is 317 after subtracting 393 from 710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3170, and continue the process.

Step 12:
3170 divided by 393 is 8 with a remainder of 26.
Use 8 as the next digit of our solution. 
Result so far: 72742.5318
If we subtract 3144 from 3170, we 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.

Going ahead to step 13:
260 divided by 393 is 0 with a remainder of 260.
Write down 0 as next digit of the result. 
Result so far: 72742.5318
If we subtract 0 from 260, we get 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Moving on to step 14:
When dividing 2600 by 393, we get 6 with a remainder of 242.
Record the quotient 6 as the next digit in the result. 
Result so far: 72742.531806
Deduct 2358 from 2600 and we're left with 242.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2420, and continue the process.

Moving on to step 15:
393 can be fit into 2420 6 times, resulting in a remainder of 62.
Put 6 as the next digit of the answer. 
Result so far: 72742.5318066
Subtract 2358 from 2420 to get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

After the division, we end up with 72742.5318066 and a remainder of 6.2e-07.