We're dividing 52959890 by 266 
The aim is to understand the frequency of 266 in 52959890.

Advancing to step 1:
When dividing 5 by 266, we get 0 with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Take the next digit (2) from the dividend and append it to 5, then repeat: 52 / 266

Step 2:
The number 266 fits into 52 0 times, leaving a remainder of 52.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 52, we get 52.
Grab the next digit (9) from the dividend, add it to 52, then carry on: 529 / 266

On to step 3:
266 can be fit into 529 1 times, resulting in a remainder of 263.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 266 from 529 to get 263.
Bring next digit (5) of the dividend behind the 263 and repeat the process: 2635 / 266

Let's proceed to step 4:
2635 divided by 266 is 9 with a remainder of 241.
Put 9 as the next digit of the answer. 
Result so far: 19.0
The remainder is 241 after subtracting 2394 from 2635.
Bring next digit (9) of the dividend behind the 241 and repeat the process: 2419 / 266

Step 5:
The number 266 fits into 2419 9 times, leaving a remainder of 25.
Use 9 as the next digit of our solution. 
Result so far: 199.0
The remainder is 25 after subtracting 2394 from 2419.
Grab the next digit (8) from the dividend, add it to 25, then carry on: 258 / 266

Advancing to step 6:
When dividing 258 by 266, we get 0 with a remainder of 258.
Write down 0 as next digit of the result. 
Result so far: 1990.0
Deduct 0 from 258 and we're left with 258.
Take the next digit (9) from the dividend and append it to 258, then repeat: 2589 / 266

Step 7:
If we divide 2589 by 266, we get 9 and a remainder of 195.
Write down 9 as next digit of the result. 
Result so far: 19909.0
Subtracting 2394 from 2589 leaves us with 195.
Take the next digit (0) from the dividend and append it to 195, then repeat: 1950 / 266

Advancing to step 8:
The number 266 fits into 1950 7 times, leaving a remainder of 88.
Use 7 as the next digit of our solution. 
Result so far: 199097.0
Subtract 1862 from 1950 to get 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Step 9:
880 divided by 266 is 3 with a remainder of 82.
Record the quotient 3 as the next digit in the result. 
Result so far: 199097.3
Deduct 798 from 880 and we're left with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Let's proceed to step 10:
266 can be fit into 820 3 times, resulting in a remainder of 22.
The number 3 becomes the next digit in our result. 
Result so far: 199097.33
If we take 798 away from 820, 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.

The quotient of the division is 199097.33, and the remainder is 0.022.