We're dividing 398940 by 26 
We want to divide 398940 by 26.

Going ahead to step 1:
When dividing 3 by 26, we get 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 26

Going ahead to step 2:
39 divided by 26 is 1 with a remainder of 13.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 13 after subtracting 26 from 39.
Bring next digit (8) of the dividend behind the 13 and repeat the process: 138 / 26

Moving on to step 3:
26 can be fit into 138 5 times, resulting in a remainder of 8.
The number 5 becomes the next digit in our result. 
Result so far: 15.0
Subtract 130 from 138 to get 8.
Take the next digit (9) from the dividend and append it to 8, then repeat: 89 / 26

On to step 4:
89 divided by 26 is 3 with a remainder of 11.
Record the quotient 3 as the next digit in the result. 
Result so far: 153.0
Subtract 78 from 89 to get 11.
Grab the next digit (4) from the dividend, add it to 11, then carry on: 114 / 26

Advancing to step 5:
26 can be fit into 114 4 times, resulting in a remainder of 10.
The number 4 becomes the next digit in our result. 
Result so far: 1534.0
Subtract 104 from 114 to get 10.
Fetch the next digit (0) from the dividend, attach it to 10 and continue: 100 / 26

Step 6:
If we divide 100 by 26, we get 3 and a remainder of 22.
Write down 3 as next digit of the result. 
Result so far: 15343.0
If we take 78 away from 100, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 7:
The number 26 fits into 220 8 times, leaving a remainder of 12.
The next digit of our result is 8. 
Result so far: 15343.8
If we subtract 208 from 220, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 8:
120 divided by 26 is 4 with a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 15343.84
Deduct 104 from 120 and we're left 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.

Advancing to step 9:
When dividing 160 by 26, we get 6 with a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 15343.846
Deduct 156 from 160 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.

Moving on to step 10:
26 can be fit into 40 1 times, resulting in a remainder of 14.
Put 1 as the next digit of the answer. 
Result so far: 15343.8461
Deduct 26 from 40 and we're left 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.

On to step 11:
26 goes into 140 5 times with a remainder of 10.
The next digit of our result is 5. 
Result so far: 15343.84615
The remainder is 10 after subtracting 130 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 12:
26 can be fit into 100 3 times, resulting in a remainder of 22.
Write down 3 as next digit of the result. 
Result so far: 15343.846153
Subtracting 78 from 100 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Step 13:
If we divide 220 by 26, we get 8 and a remainder of 12.
The next digit of our result is 8. 
Result so far: 15343.8461538
The remainder is 12 after subtracting 208 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 14:
If we divide 120 by 26, we get 4 and a remainder of 16.
The next digit of our result is 4. 
Result so far: 15343.84615384
If we subtract 104 from 120, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Our division results in 15343.84615384 with a remaining 1.6e-08.