638646 ÷ 26 
We're looking to find how many times 26 goes into 638646.

Let's proceed to step 1:
26 can be fit into 6 0 times, resulting in a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 26

Let's proceed to step 2:
The number 26 fits into 63 2 times, leaving a remainder of 11.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
The remainder is 11 after subtracting 52 from 63.
Take the next digit (8) from the dividend and append it to 11, then repeat: 118 / 26

Step 3:
118 divided by 26 is 4 with a remainder of 14.
Record the quotient 4 as the next digit in the result. 
Result so far: 24.0
Deduct 104 from 118 and we're left with 14.
Append the next digit (6) from the dividend to 14 and continue with: 146 / 26

On to step 4:
26 can be fit into 146 5 times, resulting in a remainder of 16.
Record the quotient 5 as the next digit in the result. 
Result so far: 245.0
Subtract 130 from 146 to get 16.
Append the next digit (4) from the dividend to 16 and continue with: 164 / 26

Moving on to step 5:
The number 26 fits into 164 6 times, leaving a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 2456.0
Subtracting 156 from 164 leaves us with 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 26

On to step 6:
26 goes into 86 3 times with a remainder of 8.
The number 3 becomes the next digit in our result. 
Result so far: 24563.0
The remainder is 8 after subtracting 78 from 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 7:
If we divide 80 by 26, we get 3 and a remainder of 2.
Write down 3 as next digit of the result. 
Result so far: 24563.3
Subtracting 78 from 80 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 8:
20 divided by 26 is 0 with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 24563.3
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 9:
When dividing 200 by 26, we get 7 with a remainder of 18.
Put 7 as the next digit of the answer. 
Result so far: 24563.307
Subtract 182 from 200 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 10:
The number 26 fits into 180 6 times, leaving a remainder of 24.
The number 6 becomes the next digit in our result. 
Result so far: 24563.3076
Subtract 156 from 180 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 11:
If we divide 240 by 26, we get 9 and a remainder of 6.
Record the quotient 9 as the next digit in the result. 
Result so far: 24563.30769
Subtracting 234 from 240 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 12:
When dividing 60 by 26, we get 2 with a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 24563.307692
Deduct 52 from 60 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 13:
26 can be fit into 80 3 times, resulting in a remainder of 2.
Record the quotient 3 as the next digit in the result. 
Result so far: 24563.3076923
If we take 78 away from 80, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 14:
26 can be fit into 20 0 times, resulting in a remainder of 20.
The next digit of our result is 0. 
Result so far: 24563.3076923
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The final outcome is 24563.3076923, with a leftover of 2e-08.