3490 divided by 23 
Let's see how many times 23 fits into 3490.

Moving on to step 1:
23 goes into 3 0 times with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Bring next digit (4) of the dividend behind the 3 and repeat the process: 34 / 23

Advancing to step 2:
23 can be fit into 34 1 times, resulting in a remainder of 11.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 23 from 34, we get 11.
Take the next digit (9) from the dividend and append it to 11, then repeat: 119 / 23

Moving on to step 3:
23 goes into 119 5 times with a remainder of 4.
The number 5 becomes the next digit in our result. 
Result so far: 15.0
The remainder is 4 after subtracting 115 from 119.
Fetch the next digit (0) from the dividend, attach it to 4 and continue: 40 / 23

Going ahead to step 4:
23 can be fit into 40 1 times, resulting in a remainder of 17.
The next digit of our result is 1. 
Result so far: 151.0
Subtracting 23 from 40 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 5:
170 divided by 23 is 7 with a remainder of 9.
Put 7 as the next digit of the answer. 
Result so far: 151.7
Deduct 161 from 170 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 6:
When dividing 90 by 23, we get 3 with a remainder of 21.
The next digit of our result is 3. 
Result so far: 151.73
If we subtract 69 from 90, we get 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 7:
If we divide 210 by 23, we get 9 and a remainder of 3.
Use 9 as the next digit of our solution. 
Result so far: 151.739
The remainder is 3 after subtracting 207 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 8:
If we divide 30 by 23, we get 1 and a remainder of 7.
Use 1 as the next digit of our solution. 
Result so far: 151.7391
If we subtract 23 from 30, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 9:
70 divided by 23 is 3 with a remainder of 1.
The next digit of our result is 3. 
Result so far: 151.73913
If we take 69 away from 70, we end up 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.

Advancing to step 10:
10 divided by 23 is 0 with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 151.73913
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 11:
The number 23 fits into 100 4 times, leaving a remainder of 8.
The next digit of our result is 4. 
Result so far: 151.7391304
If we subtract 92 from 100, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 12:
23 goes into 80 3 times with a remainder of 11.
Record the quotient 3 as the next digit in the result. 
Result so far: 151.73913043
The remainder is 11 after subtracting 69 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

The final outcome is 151.73913043, with a leftover of 1.1e-08.