We look at the division of 71663789 by 266 
The aim is to understand the frequency of 266 in 71663789.

Let's proceed to step 1:
When dividing 7 by 266, we get 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Bring next digit (1) of the dividend behind the 7 and repeat the process: 71 / 266

On to step 2:
266 goes into 71 0 times with a remainder of 71.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 71, we get 71.
Take the next digit (6) from the dividend and append it to 71, then repeat: 716 / 266

Advancing to step 3:
The number 266 fits into 716 2 times, leaving a remainder of 184.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtract 532 from 716 to get 184.
Fetch the next digit (6) from the dividend, attach it to 184 and continue: 1846 / 266

Let's proceed to step 4:
The number 266 fits into 1846 6 times, leaving a remainder of 250.
Record the quotient 6 as the next digit in the result. 
Result so far: 26.0
If we subtract 1596 from 1846, we get 250.
Grab the next digit (3) from the dividend, add it to 250, then carry on: 2503 / 266

On to step 5:
266 goes into 2503 9 times with a remainder of 109.
Record the quotient 9 as the next digit in the result. 
Result so far: 269.0
If we subtract 2394 from 2503, we get 109.
Fetch the next digit (7) from the dividend, attach it to 109 and continue: 1097 / 266

Advancing to step 6:
When dividing 1097 by 266, we get 4 with a remainder of 33.
Use 4 as the next digit of our solution. 
Result so far: 2694.0
If we subtract 1064 from 1097, we get 33.
Append the next digit (8) from the dividend to 33 and continue with: 338 / 266

On to step 7:
When dividing 338 by 266, we get 1 with a remainder of 72.
The number 1 becomes the next digit in our result. 
Result so far: 26941.0
Subtract 266 from 338 to get 72.
Fetch the next digit (9) from the dividend, attach it to 72 and continue: 729 / 266

Advancing to step 8:
If we divide 729 by 266, we get 2 and a remainder of 197.
Use 2 as the next digit of our solution. 
Result so far: 269412.0
If we take 532 away from 729, we end up with 197.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1970, and continue the process.

On to step 9:
When dividing 1970 by 266, we get 7 with a remainder of 108.
Use 7 as the next digit of our solution. 
Result so far: 269412.7
Subtracting 1862 from 1970 leaves us with 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

Advancing to step 10:
The number 266 fits into 1080 4 times, leaving a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 269412.74
The remainder is 16 after subtracting 1064 from 1080.
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 11:
The number 266 fits into 160 0 times, leaving a remainder of 160.
Write down 0 as next digit of the result. 
Result so far: 269412.74
The remainder is 160 after subtracting 0 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

On to step 12:
The number 266 fits into 1600 6 times, leaving a remainder of 4.
Write down 6 as next digit of the result. 
Result so far: 269412.7406
Deduct 1596 from 1600 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.

Advancing to step 13:
The number 266 fits into 40 0 times, leaving a remainder of 40.
The next digit of our result is 0. 
Result so far: 269412.7406
Subtracting 0 from 40 leaves us 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.

On to step 14:
266 can be fit into 400 1 times, resulting in a remainder of 134.
Write down 1 as next digit of the result. 
Result so far: 269412.740601
Deduct 266 from 400 and we're left with 134.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1340, and continue the process.

Moving on to step 15:
1340 divided by 266 is 5 with a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 269412.7406015
Deduct 1330 from 1340 and we're left 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.

Going ahead to step 16:
The number 266 fits into 100 0 times, leaving a remainder of 100.
The number 0 becomes the next digit in our result. 
Result so far: 269412.7406015
If we subtract 0 from 100, we get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

The final outcome is 269412.7406015, with a leftover of 1e-07.