990070 ÷ 23 
Our goal is to divide 990070 by 23.

On to step 1:
23 can be fit into 9 0 times, resulting in a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 23

Going ahead to step 2:
When dividing 99 by 23, we get 4 with a remainder of 7.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Deduct 92 from 99 and we're left with 7.
Take the next digit (0) from the dividend and append it to 7, then repeat: 70 / 23

Advancing to step 3:
If we divide 70 by 23, we get 3 and a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 43.0
Subtract 69 from 70 to get 1.
Grab the next digit (0) from the dividend, add it to 1, then carry on: 10 / 23

Moving on to step 4:
23 goes into 10 0 times with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 430.0
Subtract 0 from 10 to get 10.
Grab the next digit (7) from the dividend, add it to 10, then carry on: 107 / 23

Step 5:
If we divide 107 by 23, we get 4 and a remainder of 15.
Use 4 as the next digit of our solution. 
Result so far: 4304.0
If we take 92 away from 107, we end up with 15.
Fetch the next digit (0) from the dividend, attach it to 15 and continue: 150 / 23

Step 6:
If we divide 150 by 23, we get 6 and a remainder of 12.
Use 6 as the next digit of our solution. 
Result so far: 43046.0
Deduct 138 from 150 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 7:
If we divide 120 by 23, we get 5 and a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 43046.5
Subtract 115 from 120 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 8:
When dividing 50 by 23, we get 2 with a remainder of 4.
Write down 2 as next digit of the result. 
Result so far: 43046.52
The remainder is 4 after subtracting 46 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 9:
When dividing 40 by 23, we get 1 with a remainder of 17.
Put 1 as the next digit of the answer. 
Result so far: 43046.521
If we subtract 23 from 40, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 10:
If we divide 170 by 23, we get 7 and a remainder of 9.
Use 7 as the next digit of our solution. 
Result so far: 43046.5217
Subtract 161 from 170 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 11:
If we divide 90 by 23, we get 3 and a remainder of 21.
The number 3 becomes the next digit in our result. 
Result so far: 43046.52173
Subtracting 69 from 90 leaves us with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Advancing to step 12:
When dividing 210 by 23, we get 9 with a remainder of 3.
The number 9 becomes the next digit in our result. 
Result so far: 43046.521739
Subtract 207 from 210 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 13:
If we divide 30 by 23, we get 1 and a remainder of 7.
The next digit of our result is 1. 
Result so far: 43046.5217391
Subtracting 23 from 30 leaves us 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.

Moving on to step 14:
When dividing 70 by 23, we get 3 with a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 43046.52173913
If we subtract 69 from 70, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The quotient of the division is 43046.52173913, and the remainder is 1e-09.