23864515 ÷ 987 
We want to figure out the number of times 23864515 can be divided by 987.

Moving on to step 1:
987 goes into 2 0 times with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Take the next digit (3) from the dividend and append it to 2, then repeat: 23 / 987

Moving on to step 2:
23 divided by 987 is 0 with a remainder of 23.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 23 and we're left with 23.
Grab the next digit (8) from the dividend, add it to 23, then carry on: 238 / 987

On to step 3:
The number 987 fits into 238 0 times, leaving a remainder of 238.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 238 leaves us with 238.
Grab the next digit (6) from the dividend, add it to 238, then carry on: 2386 / 987

Moving on to step 4:
987 can be fit into 2386 2 times, resulting in a remainder of 412.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtract 1974 from 2386 to get 412.
Take the next digit (4) from the dividend and append it to 412, then repeat: 4124 / 987

Let's proceed to step 5:
987 goes into 4124 4 times with a remainder of 176.
Put 4 as the next digit of the answer. 
Result so far: 24.0
If we subtract 3948 from 4124, we get 176.
Bring next digit (5) of the dividend behind the 176 and repeat the process: 1765 / 987

On to step 6:
987 goes into 1765 1 times with a remainder of 778.
The next digit of our result is 1. 
Result so far: 241.0
Subtract 987 from 1765 to get 778.
Append the next digit (1) from the dividend to 778 and continue with: 7781 / 987

Going ahead to step 7:
When dividing 7781 by 987, we get 7 with a remainder of 872.
Put 7 as the next digit of the answer. 
Result so far: 2417.0
Subtract 6909 from 7781 to get 872.
Include the next digit (5) from the dividend after 872, then repeat: 8725 / 987

Moving on to step 8:
987 can be fit into 8725 8 times, resulting in a remainder of 829.
Record the quotient 8 as the next digit in the result. 
Result so far: 24178.0
The remainder is 829 after subtracting 7896 from 8725.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8290, and continue the process.

On to step 9:
When dividing 8290 by 987, we get 8 with a remainder of 394.
The next digit of our result is 8. 
Result so far: 24178.8
The remainder is 394 after subtracting 7896 from 8290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3940, and continue the process.

Moving on to step 10:
3940 divided by 987 is 3 with a remainder of 979.
Record the quotient 3 as the next digit in the result. 
Result so far: 24178.83
If we take 2961 away from 3940, we end up with 979.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9790, and continue the process.

Let's proceed to step 11:
When dividing 9790 by 987, we get 9 with a remainder of 907.
The number 9 becomes the next digit in our result. 
Result so far: 24178.839
If we take 8883 away from 9790, we end up with 907.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9070, and continue the process.

Let's proceed to step 12:
9070 divided by 987 is 9 with a remainder of 187.
The next digit of our result is 9. 
Result so far: 24178.8399
Subtract 8883 from 9070 to get 187.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1870, and continue the process.

After the division, we end up with 24178.8399 and a remainder of 0.00187.