978858 ÷ 23 
We want to figure out the number of times 978858 can be divided by 23.

On to step 1:
9 divided by 23 is 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Grab the next digit (7) from the dividend, add it to 9, then carry on: 97 / 23

Step 2:
If we divide 97 by 23, we get 4 and a remainder of 5.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtracting 92 from 97 leaves us with 5.
Bring next digit (8) of the dividend behind the 5 and repeat the process: 58 / 23

Let's proceed to step 3:
When dividing 58 by 23, we get 2 with a remainder of 12.
Write down 2 as next digit of the result. 
Result so far: 42.0
Deduct 46 from 58 and we're left with 12.
Bring next digit (8) of the dividend behind the 12 and repeat the process: 128 / 23

Let's proceed to step 4:
The number 23 fits into 128 5 times, leaving a remainder of 13.
Record the quotient 5 as the next digit in the result. 
Result so far: 425.0
If we take 115 away from 128, we end up with 13.
Fetch the next digit (5) from the dividend, attach it to 13 and continue: 135 / 23

Advancing to step 5:
If we divide 135 by 23, we get 5 and a remainder of 20.
The number 5 becomes the next digit in our result. 
Result so far: 4255.0
The remainder is 20 after subtracting 115 from 135.
Include the next digit (8) from the dividend after 20, then repeat: 208 / 23

Step 6:
23 can be fit into 208 9 times, resulting in a remainder of 1.
Use 9 as the next digit of our solution. 
Result so far: 42559.0
Subtracting 207 from 208 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 7:
23 can be fit into 10 0 times, resulting in a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 42559.0
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 8:
23 goes into 100 4 times with a remainder of 8.
The next digit of our result is 4. 
Result so far: 42559.04
Subtracting 92 from 100 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 9:
When dividing 80 by 23, we get 3 with a remainder of 11.
Record the quotient 3 as the next digit in the result. 
Result so far: 42559.043
Deduct 69 from 80 and we're left with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Going ahead to step 10:
23 goes into 110 4 times with a remainder of 18.
Record the quotient 4 as the next digit in the result. 
Result so far: 42559.0434
Deduct 92 from 110 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 11:
The number 23 fits into 180 7 times, leaving a remainder of 19.
Put 7 as the next digit of the answer. 
Result so far: 42559.04347
If we subtract 161 from 180, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Going ahead to step 12:
When dividing 190 by 23, we get 8 with a remainder of 6.
Use 8 as the next digit of our solution. 
Result so far: 42559.043478
Subtracting 184 from 190 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 13:
The number 23 fits into 60 2 times, leaving a remainder of 14.
Record the quotient 2 as the next digit in the result. 
Result so far: 42559.0434782
If we take 46 away from 60, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 14:
If we divide 140 by 23, we get 6 and a remainder of 2.
The next digit of our result is 6. 
Result so far: 42559.04347826
If we take 138 away from 140, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Our division results in 42559.04347826 with a remaining 2e-09.