18245355 divided by 864 
Let's see how many times 864 fits into 18245355.

On to step 1:
1 divided by 864 is 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Fetch the next digit (8) from the dividend, attach it to 1 and continue: 18 / 864

Let's proceed to step 2:
If we divide 18 by 864, we get 0 and a remainder of 18.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 18, we end up with 18.
Take the next digit (2) from the dividend and append it to 18, then repeat: 182 / 864

Step 3:
When dividing 182 by 864, we get 0 with a remainder of 182.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 182 and we're left with 182.
Grab the next digit (4) from the dividend, add it to 182, then carry on: 1824 / 864

Moving on to step 4:
When dividing 1824 by 864, we get 2 with a remainder of 96.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Deduct 1728 from 1824 and we're left with 96.
Append the next digit (5) from the dividend to 96 and continue with: 965 / 864

Let's proceed to step 5:
864 can be fit into 965 1 times, resulting in a remainder of 101.
Put 1 as the next digit of the answer. 
Result so far: 21.0
The remainder is 101 after subtracting 864 from 965.
Grab the next digit (3) from the dividend, add it to 101, then carry on: 1013 / 864

Step 6:
864 goes into 1013 1 times with a remainder of 149.
Write down 1 as next digit of the result. 
Result so far: 211.0
If we take 864 away from 1013, we end up with 149.
Take the next digit (5) from the dividend and append it to 149, then repeat: 1495 / 864

Step 7:
1495 divided by 864 is 1 with a remainder of 631.
Record the quotient 1 as the next digit in the result. 
Result so far: 2111.0
Subtracting 864 from 1495 leaves us with 631.
Grab the next digit (5) from the dividend, add it to 631, then carry on: 6315 / 864

On to step 8:
864 goes into 6315 7 times with a remainder of 267.
The number 7 becomes the next digit in our result. 
Result so far: 21117.0
Deduct 6048 from 6315 and we're left with 267.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2670, and continue the process.

Step 9:
The number 864 fits into 2670 3 times, leaving a remainder of 78.
Use 3 as the next digit of our solution. 
Result so far: 21117.3
Subtracting 2592 from 2670 leaves us with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Advancing to step 10:
780 divided by 864 is 0 with a remainder of 780.
The next digit of our result is 0. 
Result so far: 21117.3
The remainder is 780 after subtracting 0 from 780.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7800, and continue the process.

On to step 11:
The number 864 fits into 7800 9 times, leaving a remainder of 24.
The next digit of our result is 9. 
Result so far: 21117.309
The remainder is 24 after subtracting 7776 from 7800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 12:
864 goes into 240 0 times with a remainder of 240.
Use 0 as the next digit of our solution. 
Result so far: 21117.309
Subtract 0 from 240 to get 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Moving on to step 13:
2400 divided by 864 is 2 with a remainder of 672.
Put 2 as the next digit of the answer. 
Result so far: 21117.30902
If we subtract 1728 from 2400, we get 672.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6720, and continue the process.

Let's proceed to step 14:
If we divide 6720 by 864, we get 7 and a remainder of 672.
Record the quotient 7 as the next digit in the result. 
Result so far: 21117.309027
Subtracting 6048 from 6720 leaves us with 672.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6720, and continue the process.

Let's proceed to step 15:
When dividing 6720 by 864, we get 7 with a remainder of 672.
The number 7 becomes the next digit in our result. 
Result so far: 21117.3090277
The remainder is 672 after subtracting 6048 from 6720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6720, and continue the process.

After the division, we end up with 21117.3090277 and a remainder of 6.72e-06.