We look at the division of 89438891 by 497 
The aim is to understand the frequency of 497 in 89438891.

On to step 1:
8 divided by 497 is 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Fetch the next digit (9) from the dividend, attach it to 8 and continue: 89 / 497

Moving on to step 2:
The number 497 fits into 89 0 times, leaving a remainder of 89.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 89 leaves us with 89.
Grab the next digit (4) from the dividend, add it to 89, then carry on: 894 / 497

Step 3:
894 divided by 497 is 1 with a remainder of 397.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 497 from 894, we get 397.
Take the next digit (3) from the dividend and append it to 397, then repeat: 3973 / 497

Let's proceed to step 4:
497 goes into 3973 7 times with a remainder of 494.
The number 7 becomes the next digit in our result. 
Result so far: 17.0
If we subtract 3479 from 3973, we get 494.
Grab the next digit (8) from the dividend, add it to 494, then carry on: 4948 / 497

Step 5:
497 can be fit into 4948 9 times, resulting in a remainder of 475.
Write down 9 as next digit of the result. 
Result so far: 179.0
Subtracting 4473 from 4948 leaves us with 475.
Fetch the next digit (8) from the dividend, attach it to 475 and continue: 4758 / 497

Step 6:
497 goes into 4758 9 times with a remainder of 285.
The number 9 becomes the next digit in our result. 
Result so far: 1799.0
If we take 4473 away from 4758, we end up with 285.
Grab the next digit (9) from the dividend, add it to 285, then carry on: 2859 / 497

Let's proceed to step 7:
When dividing 2859 by 497, we get 5 with a remainder of 374.
The next digit of our result is 5. 
Result so far: 17995.0
The remainder is 374 after subtracting 2485 from 2859.
Bring next digit (1) of the dividend behind the 374 and repeat the process: 3741 / 497

Advancing to step 8:
If we divide 3741 by 497, we get 7 and a remainder of 262.
The next digit of our result is 7. 
Result so far: 179957.0
If we take 3479 away from 3741, we end up with 262.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2620, and continue the process.

Going ahead to step 9:
497 can be fit into 2620 5 times, resulting in a remainder of 135.
The next digit of our result is 5. 
Result so far: 179957.5
Deduct 2485 from 2620 and we're left with 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Moving on to step 10:
When dividing 1350 by 497, we get 2 with a remainder of 356.
Record the quotient 2 as the next digit in the result. 
Result so far: 179957.52
Subtract 994 from 1350 to get 356.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3560, and continue the process.

Advancing to step 11:
If we divide 3560 by 497, we get 7 and a remainder of 81.
Use 7 as the next digit of our solution. 
Result so far: 179957.527
Subtract 3479 from 3560 to get 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

On to step 12:
The number 497 fits into 810 1 times, leaving a remainder of 313.
Record the quotient 1 as the next digit in the result. 
Result so far: 179957.5271
If we subtract 497 from 810, we get 313.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3130, and continue the process.

Step 13:
If we divide 3130 by 497, we get 6 and a remainder of 148.
Record the quotient 6 as the next digit in the result. 
Result so far: 179957.52716
Subtract 2982 from 3130 to get 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

Advancing to step 14:
If we divide 1480 by 497, we get 2 and a remainder of 486.
Record the quotient 2 as the next digit in the result. 
Result so far: 179957.527162
Deduct 994 from 1480 and we're left with 486.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4860, and continue the process.

Going ahead to step 15:
497 can be fit into 4860 9 times, resulting in a remainder of 387.
The next digit of our result is 9. 
Result so far: 179957.5271629
If we take 4473 away from 4860, we end up with 387.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3870, and continue the process.

Step 16:
3870 divided by 497 is 7 with a remainder of 391.
Record the quotient 7 as the next digit in the result. 
Result so far: 179957.52716297
The remainder is 391 after subtracting 3479 from 3870.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3910, and continue the process.

In conclusion, the division gives 179957.52716297 with a balance of 3.91e-07.