23997589 divided by 159 
We want to figure out the number of times 23997589 can be divided by 159.

Moving on to step 1:
If we divide 2 by 159, we get 0 and a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Fetch the next digit (3) from the dividend, attach it to 2 and continue: 23 / 159

Moving on to step 2:
When dividing 23 by 159, we get 0 with a remainder of 23.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 23 after subtracting 0 from 23.
Append the next digit (9) from the dividend to 23 and continue with: 239 / 159

Step 3:
If we divide 239 by 159, we get 1 and a remainder of 80.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 159 from 239 to get 80.
Include the next digit (9) from the dividend after 80, then repeat: 809 / 159

Moving on to step 4:
809 divided by 159 is 5 with a remainder of 14.
Put 5 as the next digit of the answer. 
Result so far: 15.0
Subtract 795 from 809 to get 14.
Take the next digit (7) from the dividend and append it to 14, then repeat: 147 / 159

On to step 5:
159 can be fit into 147 0 times, resulting in a remainder of 147.
Use 0 as the next digit of our solution. 
Result so far: 150.0
Deduct 0 from 147 and we're left with 147.
Fetch the next digit (5) from the dividend, attach it to 147 and continue: 1475 / 159

Step 6:
159 goes into 1475 9 times with a remainder of 44.
The next digit of our result is 9. 
Result so far: 1509.0
The remainder is 44 after subtracting 1431 from 1475.
Bring next digit (8) of the dividend behind the 44 and repeat the process: 448 / 159

Let's proceed to step 7:
The number 159 fits into 448 2 times, leaving a remainder of 130.
The next digit of our result is 2. 
Result so far: 15092.0
The remainder is 130 after subtracting 318 from 448.
Fetch the next digit (9) from the dividend, attach it to 130 and continue: 1309 / 159

Let's proceed to step 8:
If we divide 1309 by 159, we get 8 and a remainder of 37.
Use 8 as the next digit of our solution. 
Result so far: 150928.0
Subtract 1272 from 1309 to get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Step 9:
If we divide 370 by 159, we get 2 and a remainder of 52.
The number 2 becomes the next digit in our result. 
Result so far: 150928.2
If we take 318 away from 370, we end up with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Let's proceed to step 10:
159 can be fit into 520 3 times, resulting in a remainder of 43.
The next digit of our result is 3. 
Result so far: 150928.23
The remainder is 43 after subtracting 477 from 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Let's proceed to step 11:
159 goes into 430 2 times with a remainder of 112.
Put 2 as the next digit of the answer. 
Result so far: 150928.232
If we subtract 318 from 430, we get 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

On to step 12:
The number 159 fits into 1120 7 times, leaving a remainder of 7.
Record the quotient 7 as the next digit in the result. 
Result so far: 150928.2327
If we take 1113 away from 1120, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 13:
159 goes into 70 0 times with a remainder of 70.
The number 0 becomes the next digit in our result. 
Result so far: 150928.2327
Subtract 0 from 70 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

On to step 14:
The number 159 fits into 700 4 times, leaving a remainder of 64.
The number 4 becomes the next digit in our result. 
Result so far: 150928.232704
Subtract 636 from 700 to get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Going ahead to step 15:
If we divide 640 by 159, we get 4 and a remainder of 4.
Use 4 as the next digit of our solution. 
Result so far: 150928.2327044
Deduct 636 from 640 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

After the division, we end up with 150928.2327044 and a remainder of 4e-08.