We're dividing 81607401 by 263 
The aim is to understand the frequency of 263 in 81607401.

Going ahead to step 1:
8 divided by 263 is 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 263

Moving on to step 2:
263 can be fit into 81 0 times, resulting in a remainder of 81.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 81 to get 81.
Include the next digit (6) from the dividend after 81, then repeat: 816 / 263

Let's proceed to step 3:
When dividing 816 by 263, we get 3 with a remainder of 27.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtracting 789 from 816 leaves us with 27.
Bring next digit (0) of the dividend behind the 27 and repeat the process: 270 / 263

Let's proceed to step 4:
263 goes into 270 1 times with a remainder of 7.
The next digit of our result is 1. 
Result so far: 31.0
The remainder is 7 after subtracting 263 from 270.
Grab the next digit (7) from the dividend, add it to 7, then carry on: 77 / 263

On to step 5:
If we divide 77 by 263, we get 0 and a remainder of 77.
Write down 0 as next digit of the result. 
Result so far: 310.0
The remainder is 77 after subtracting 0 from 77.
Fetch the next digit (4) from the dividend, attach it to 77 and continue: 774 / 263

Step 6:
If we divide 774 by 263, we get 2 and a remainder of 248.
The number 2 becomes the next digit in our result. 
Result so far: 3102.0
Subtract 526 from 774 to get 248.
Fetch the next digit (0) from the dividend, attach it to 248 and continue: 2480 / 263

Step 7:
263 goes into 2480 9 times with a remainder of 113.
The number 9 becomes the next digit in our result. 
Result so far: 31029.0
Subtract 2367 from 2480 to get 113.
Fetch the next digit (1) from the dividend, attach it to 113 and continue: 1131 / 263

Going ahead to step 8:
The number 263 fits into 1131 4 times, leaving a remainder of 79.
The next digit of our result is 4. 
Result so far: 310294.0
The remainder is 79 after subtracting 1052 from 1131.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Let's proceed to step 9:
790 divided by 263 is 3 with a remainder of 1.
The number 3 becomes the next digit in our result. 
Result so far: 310294.3
The remainder is 1 after subtracting 789 from 790.
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:
263 goes into 10 0 times with a remainder of 10.
The next digit of our result is 0. 
Result so far: 310294.3
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 11:
When dividing 100 by 263, we get 0 with a remainder of 100.
The next digit of our result is 0. 
Result so far: 310294.3
If we take 0 away from 100, we end up with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

After the division, we end up with 310294.3 and a remainder of 0.01.