We're dividing 390441 by 26 
We're looking to find how many times 26 goes into 390441.

Step 1:
When dividing 3 by 26, we get 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 26

Advancing to step 2:
39 divided by 26 is 1 with a remainder of 13.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 26 from 39, we get 13.
Bring next digit (0) of the dividend behind the 13 and repeat the process: 130 / 26

On to step 3:
When dividing 130 by 26, we get 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 15.0
Subtracting 130 from 130 leaves us with 0.
Bring next digit (4) of the dividend behind the 0 and repeat the process: 4 / 26

Advancing to step 4:
26 goes into 4 0 times with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 150.0
Subtract 0 from 4 to get 4.
Take the next digit (4) from the dividend and append it to 4, then repeat: 44 / 26

Advancing to step 5:
26 goes into 44 1 times with a remainder of 18.
Put 1 as the next digit of the answer. 
Result so far: 1501.0
If we take 26 away from 44, we end up with 18.
Append the next digit (1) from the dividend to 18 and continue with: 181 / 26

Advancing to step 6:
If we divide 181 by 26, we get 6 and a remainder of 25.
Put 6 as the next digit of the answer. 
Result so far: 15016.0
If we take 156 away from 181, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Moving on to step 7:
250 divided by 26 is 9 with a remainder of 16.
Write down 9 as next digit of the result. 
Result so far: 15016.9
If we subtract 234 from 250, 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.

On to step 8:
The number 26 fits into 160 6 times, leaving a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 15016.96
The remainder is 4 after subtracting 156 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 9:
When dividing 40 by 26, we get 1 with a remainder of 14.
Use 1 as the next digit of our solution. 
Result so far: 15016.961
Subtract 26 from 40 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 10:
140 divided by 26 is 5 with a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 15016.9615
Subtracting 130 from 140 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.

Let's proceed to step 11:
100 divided by 26 is 3 with a remainder of 22.
Use 3 as the next digit of our solution. 
Result so far: 15016.96153
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.

Step 12:
26 goes into 220 8 times with a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 15016.961538
If we take 208 away from 220, we end up 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.

On to step 13:
26 can be fit into 120 4 times, resulting in a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 15016.9615384
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.

On to step 14:
If we divide 160 by 26, we get 6 and a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 15016.96153846
The remainder is 4 after subtracting 156 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The final outcome is 15016.96153846, with a leftover of 4e-09.