Let's divide 91523571 by 289
The aim is to understand the frequency of 289 in 91523571.

Let's proceed to step 1:
The number 289 fits into 9 0 times, leaving a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Take the next digit (1) from the dividend and append it to 9, then repeat: 91 / 289

Step 2:
When dividing 91 by 289, we get 0 with a remainder of 91.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 91 and we're left with 91.
Fetch the next digit (5) from the dividend, attach it to 91 and continue: 915 / 289

Step 3:
915 divided by 289 is 3 with a remainder of 48.
Use 3 as the next digit of our solution. 
Result so far: 3.0
The remainder is 48 after subtracting 867 from 915.
Fetch the next digit (2) from the dividend, attach it to 48 and continue: 482 / 289

On to step 4:
289 can be fit into 482 1 times, resulting in a remainder of 193.
Use 1 as the next digit of our solution. 
Result so far: 31.0
Subtract 289 from 482 to get 193.
Fetch the next digit (3) from the dividend, attach it to 193 and continue: 1933 / 289

Step 5:
The number 289 fits into 1933 6 times, leaving a remainder of 199.
The number 6 becomes the next digit in our result. 
Result so far: 316.0
Subtracting 1734 from 1933 leaves us with 199.
Bring next digit (5) of the dividend behind the 199 and repeat the process: 1995 / 289

Advancing to step 6:
289 goes into 1995 6 times with a remainder of 261.
The number 6 becomes the next digit in our result. 
Result so far: 3166.0
The remainder is 261 after subtracting 1734 from 1995.
Bring next digit (7) of the dividend behind the 261 and repeat the process: 2617 / 289

Let's proceed to step 7:
2617 divided by 289 is 9 with a remainder of 16.
Record the quotient 9 as the next digit in the result. 
Result so far: 31669.0
Subtract 2601 from 2617 to get 16.
Fetch the next digit (1) from the dividend, attach it to 16 and continue: 161 / 289

Moving on to step 8:
289 goes into 161 0 times with a remainder of 161.
Write down 0 as next digit of the result. 
Result so far: 316690.0
Subtracting 0 from 161 leaves us with 161.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1610, and continue the process.

Moving on to step 9:
When dividing 1610 by 289, we get 5 with a remainder of 165.
The number 5 becomes the next digit in our result. 
Result so far: 316690.5
Deduct 1445 from 1610 and we're left with 165.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

Advancing to step 10:
289 can be fit into 1650 5 times, resulting in a remainder of 205.
Put 5 as the next digit of the answer. 
Result so far: 316690.55
The remainder is 205 after subtracting 1445 from 1650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2050, and continue the process.

Our division results in 316690.55 with a remaining 0.205.