23994618 ÷ 90 
We want to figure out the number of times 23994618 can be divided by 90.

Let's proceed to step 1:
The number 90 fits into 2 0 times, leaving a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Take the next digit (3) from the dividend and append it to 2, then repeat: 23 / 90

Advancing to step 2:
23 divided by 90 is 0 with a remainder of 23.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 23 and we're left with 23.
Append the next digit (9) from the dividend to 23 and continue with: 239 / 90

Step 3:
90 can be fit into 239 2 times, resulting in a remainder of 59.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Deduct 180 from 239 and we're left with 59.
Take the next digit (9) from the dividend and append it to 59, then repeat: 599 / 90

Step 4:
90 can be fit into 599 6 times, resulting in a remainder of 59.
Use 6 as the next digit of our solution. 
Result so far: 26.0
Subtract 540 from 599 to get 59.
Include the next digit (4) from the dividend after 59, then repeat: 594 / 90

Let's proceed to step 5:
594 divided by 90 is 6 with a remainder of 54.
Put 6 as the next digit of the answer. 
Result so far: 266.0
Deduct 540 from 594 and we're left with 54.
Grab the next digit (6) from the dividend, add it to 54, then carry on: 546 / 90

On to step 6:
If we divide 546 by 90, we get 6 and a remainder of 6.
Use 6 as the next digit of our solution. 
Result so far: 2666.0
If we take 540 away from 546, we end up with 6.
Include the next digit (1) from the dividend after 6, then repeat: 61 / 90

Let's proceed to step 7:
If we divide 61 by 90, we get 0 and a remainder of 61.
Use 0 as the next digit of our solution. 
Result so far: 26660.0
If we take 0 away from 61, we end up with 61.
Include the next digit (8) from the dividend after 61, then repeat: 618 / 90

Let's proceed to step 8:
When dividing 618 by 90, we get 6 with a remainder of 78.
Record the quotient 6 as the next digit in the result. 
Result so far: 266606.0
Deduct 540 from 618 and we're left 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.

Step 9:
90 can be fit into 780 8 times, resulting in a remainder of 60.
The number 8 becomes the next digit in our result. 
Result so far: 266606.8
Deduct 720 from 780 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 10:
When dividing 600 by 90, we get 6 with a remainder of 60.
Write down 6 as next digit of the result. 
Result so far: 266606.86
Subtract 540 from 600 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 11:
The number 90 fits into 600 6 times, leaving a remainder of 60.
The next digit of our result is 6. 
Result so far: 266606.866
Subtract 540 from 600 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

The final result is 266606.866 with a remainder of 0.006.