We're dividing 12390 by 46 
Our goal is to divide 12390 by 46.

Step 1:
If we divide 1 by 46, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 46

Let's proceed to step 2:
The number 46 fits into 12 0 times, leaving a remainder of 12.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 12, we end up with 12.
Include the next digit (3) from the dividend after 12, then repeat: 123 / 46

Moving on to step 3:
The number 46 fits into 123 2 times, leaving a remainder of 31.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 92 from 123 and we're left with 31.
Append the next digit (9) from the dividend to 31 and continue with: 319 / 46

Moving on to step 4:
46 can be fit into 319 6 times, resulting in a remainder of 43.
Put 6 as the next digit of the answer. 
Result so far: 26.0
Subtract 276 from 319 to get 43.
Fetch the next digit (0) from the dividend, attach it to 43 and continue: 430 / 46

On to step 5:
When dividing 430 by 46, we get 9 with a remainder of 16.
Use 9 as the next digit of our solution. 
Result so far: 269.0
If we take 414 away from 430, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 6:
When dividing 160 by 46, we get 3 with a remainder of 22.
Write down 3 as next digit of the result. 
Result so far: 269.3
If we subtract 138 from 160, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 7:
If we divide 220 by 46, we get 4 and a remainder of 36.
The next digit of our result is 4. 
Result so far: 269.34
Subtract 184 from 220 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 8:
If we divide 360 by 46, we get 7 and a remainder of 38.
Use 7 as the next digit of our solution. 
Result so far: 269.347
Subtract 322 from 360 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

On to step 9:
If we divide 380 by 46, we get 8 and a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 269.3478
The remainder is 12 after subtracting 368 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 10:
46 can be fit into 120 2 times, resulting in a remainder of 28.
Use 2 as the next digit of our solution. 
Result so far: 269.34782
Subtract 92 from 120 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 11:
46 goes into 280 6 times with a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 269.347826
If we take 276 away from 280, we end up 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.

Step 12:
46 goes into 40 0 times with a remainder of 40.
The next digit of our result is 0. 
Result so far: 269.347826
Deduct 0 from 40 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 13:
When dividing 400 by 46, we get 8 with a remainder of 32.
The number 8 becomes the next digit in our result. 
Result so far: 269.34782608
Deduct 368 from 400 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

The quotient of the division is 269.34782608, and the remainder is 3.2e-08.