151591 divided by 97 
The aim is to understand the frequency of 97 in 151591.

Let's proceed to step 1:
97 can be fit into 1 0 times, resulting in a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 97

On to step 2:
97 can be fit into 15 0 times, resulting in a remainder of 15.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 15, we end up with 15.
Take the next digit (1) from the dividend and append it to 15, then repeat: 151 / 97

Going ahead to step 3:
When dividing 151 by 97, we get 1 with a remainder of 54.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 97 from 151, we get 54.
Fetch the next digit (5) from the dividend, attach it to 54 and continue: 545 / 97

Step 4:
If we divide 545 by 97, we get 5 and a remainder of 60.
The next digit of our result is 5. 
Result so far: 15.0
Subtract 485 from 545 to get 60.
Bring next digit (9) of the dividend behind the 60 and repeat the process: 609 / 97

Going ahead to step 5:
97 goes into 609 6 times with a remainder of 27.
The number 6 becomes the next digit in our result. 
Result so far: 156.0
Deduct 582 from 609 and we're left with 27.
Take the next digit (1) from the dividend and append it to 27, then repeat: 271 / 97

Advancing to step 6:
271 divided by 97 is 2 with a remainder of 77.
The number 2 becomes the next digit in our result. 
Result so far: 1562.0
Subtracting 194 from 271 leaves us with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Advancing to step 7:
The number 97 fits into 770 7 times, leaving a remainder of 91.
Use 7 as the next digit of our solution. 
Result so far: 1562.7
If we subtract 679 from 770, we get 91.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

Step 8:
The number 97 fits into 910 9 times, leaving a remainder of 37.
The number 9 becomes the next digit in our result. 
Result so far: 1562.79
Subtracting 873 from 910 leaves us with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Moving on to step 9:
If we divide 370 by 97, we get 3 and a remainder of 79.
Use 3 as the next digit of our solution. 
Result so far: 1562.793
If we subtract 291 from 370, we get 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Going ahead to step 10:
When dividing 790 by 97, we get 8 with a remainder of 14.
Write down 8 as next digit of the result. 
Result so far: 1562.7938
Subtracting 776 from 790 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 11:
The number 97 fits into 140 1 times, leaving a remainder of 43.
Put 1 as the next digit of the answer. 
Result so far: 1562.79381
If we take 97 away from 140, we end up with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Moving on to step 12:
97 goes into 430 4 times with a remainder of 42.
Record the quotient 4 as the next digit in the result. 
Result so far: 1562.793814
If we take 388 away from 430, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 13:
97 can be fit into 420 4 times, resulting in a remainder of 32.
Write down 4 as next digit of the result. 
Result so far: 1562.7938144
If we subtract 388 from 420, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

The final result is 1562.7938144 with a remainder of 3.2e-07.