We look at the division of 66430747 by 289 
The aim is to understand the frequency of 289 in 66430747.

Going ahead to step 1:
289 goes into 6 0 times with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 289

Moving on to step 2:
If we divide 66 by 289, we get 0 and a remainder of 66.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 66, we get 66.
Grab the next digit (4) from the dividend, add it to 66, then carry on: 664 / 289

Going ahead to step 3:
289 goes into 664 2 times with a remainder of 86.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtract 578 from 664 to get 86.
Take the next digit (3) from the dividend and append it to 86, then repeat: 863 / 289

Advancing to step 4:
When dividing 863 by 289, we get 2 with a remainder of 285.
The number 2 becomes the next digit in our result. 
Result so far: 22.0
Subtracting 578 from 863 leaves us with 285.
Include the next digit (0) from the dividend after 285, then repeat: 2850 / 289

Let's proceed to step 5:
The number 289 fits into 2850 9 times, leaving a remainder of 249.
The next digit of our result is 9. 
Result so far: 229.0
Deduct 2601 from 2850 and we're left with 249.
Fetch the next digit (7) from the dividend, attach it to 249 and continue: 2497 / 289

Let's proceed to step 6:
The number 289 fits into 2497 8 times, leaving a remainder of 185.
Write down 8 as next digit of the result. 
Result so far: 2298.0
Subtract 2312 from 2497 to get 185.
Grab the next digit (4) from the dividend, add it to 185, then carry on: 1854 / 289

Step 7:
When dividing 1854 by 289, we get 6 with a remainder of 120.
Use 6 as the next digit of our solution. 
Result so far: 22986.0
The remainder is 120 after subtracting 1734 from 1854.
Take the next digit (7) from the dividend and append it to 120, then repeat: 1207 / 289

Step 8:
1207 divided by 289 is 4 with a remainder of 51.
Record the quotient 4 as the next digit in the result. 
Result so far: 229864.0
Subtract 1156 from 1207 to get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

On to step 9:
If we divide 510 by 289, we get 1 and a remainder of 221.
Put 1 as the next digit of the answer. 
Result so far: 229864.1
If we take 289 away from 510, we end up with 221.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2210, and continue the process.

Going ahead to step 10:
The number 289 fits into 2210 7 times, leaving a remainder of 187.
Put 7 as the next digit of the answer. 
Result so far: 229864.17
If we subtract 2023 from 2210, we get 187.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1870, and continue the process.

Step 11:
289 can be fit into 1870 6 times, resulting in a remainder of 136.
Write down 6 as next digit of the result. 
Result so far: 229864.176
The remainder is 136 after subtracting 1734 from 1870.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Let's proceed to step 12:
289 can be fit into 1360 4 times, resulting in a remainder of 204.
Record the quotient 4 as the next digit in the result. 
Result so far: 229864.1764
Subtracting 1156 from 1360 leaves us with 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

Let's proceed to step 13:
When dividing 2040 by 289, we get 7 with a remainder of 17.
The next digit of our result is 7. 
Result so far: 229864.17647
If we take 2023 away from 2040, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 14:
When dividing 170 by 289, we get 0 with a remainder of 170.
The next digit of our result is 0. 
Result so far: 229864.17647
Subtracting 0 from 170 leaves us with 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

On to step 15:
The number 289 fits into 1700 5 times, leaving a remainder of 255.
The next digit of our result is 5. 
Result so far: 229864.1764705
The remainder is 255 after subtracting 1445 from 1700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2550, and continue the process.

Step 16:
289 can be fit into 2550 8 times, resulting in a remainder of 238.
The next digit of our result is 8. 
Result so far: 229864.17647058
If we subtract 2312 from 2550, we get 238.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

After the division, we end up with 229864.17647058 and a remainder of 2.38e-07.