99240891 divided by 901 
The aim is to understand the frequency of 901 in 99240891.

On to step 1:
When dividing 9 by 901, we get 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Bring next digit (9) of the dividend behind the 9 and repeat the process: 99 / 901

Let's proceed to step 2:
901 can be fit into 99 0 times, resulting in a remainder of 99.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 99 leaves us with 99.
Include the next digit (2) from the dividend after 99, then repeat: 992 / 901

Step 3:
901 can be fit into 992 1 times, resulting in a remainder of 91.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 901 from 992, we get 91.
Fetch the next digit (4) from the dividend, attach it to 91 and continue: 914 / 901

On to step 4:
If we divide 914 by 901, we get 1 and a remainder of 13.
The next digit of our result is 1. 
Result so far: 11.0
Deduct 901 from 914 and we're left with 13.
Take the next digit (0) from the dividend and append it to 13, then repeat: 130 / 901

Going ahead to step 5:
When dividing 130 by 901, we get 0 with a remainder of 130.
Use 0 as the next digit of our solution. 
Result so far: 110.0
If we subtract 0 from 130, we get 130.
Bring next digit (8) of the dividend behind the 130 and repeat the process: 1308 / 901

Going ahead to step 6:
The number 901 fits into 1308 1 times, leaving a remainder of 407.
Use 1 as the next digit of our solution. 
Result so far: 1101.0
If we subtract 901 from 1308, we get 407.
Include the next digit (9) from the dividend after 407, then repeat: 4079 / 901

Advancing to step 7:
The number 901 fits into 4079 4 times, leaving a remainder of 475.
Record the quotient 4 as the next digit in the result. 
Result so far: 11014.0
If we take 3604 away from 4079, we end up with 475.
Append the next digit (1) from the dividend to 475 and continue with: 4751 / 901

Moving on to step 8:
901 goes into 4751 5 times with a remainder of 246.
Put 5 as the next digit of the answer. 
Result so far: 110145.0
Subtracting 4505 from 4751 leaves us with 246.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2460, and continue the process.

Moving on to step 9:
When dividing 2460 by 901, we get 2 with a remainder of 658.
The next digit of our result is 2. 
Result so far: 110145.2
If we take 1802 away from 2460, we end up with 658.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6580, and continue the process.

Let's proceed to step 10:
When dividing 6580 by 901, we get 7 with a remainder of 273.
The number 7 becomes the next digit in our result. 
Result so far: 110145.27
If we subtract 6307 from 6580, we get 273.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2730, and continue the process.

Let's proceed to step 11:
When dividing 2730 by 901, we get 3 with a remainder of 27.
The number 3 becomes the next digit in our result. 
Result so far: 110145.273
The remainder is 27 after subtracting 2703 from 2730.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Step 12:
The number 901 fits into 270 0 times, leaving a remainder of 270.
The number 0 becomes the next digit in our result. 
Result so far: 110145.273
Subtracting 0 from 270 leaves us with 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Moving on to step 13:
When dividing 2700 by 901, we get 2 with a remainder of 898.
The next digit of our result is 2. 
Result so far: 110145.27302
Subtract 1802 from 2700 to get 898.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8980, and continue the process.

Moving on to step 14:
If we divide 8980 by 901, we get 9 and a remainder of 871.
The number 9 becomes the next digit in our result. 
Result so far: 110145.273029
Deduct 8109 from 8980 and we're left with 871.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8710, and continue the process.

Step 15:
901 goes into 8710 9 times with a remainder of 601.
Put 9 as the next digit of the answer. 
Result so far: 110145.2730299
If we take 8109 away from 8710, we end up with 601.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6010, and continue the process.

The final result is 110145.2730299 with a remainder of 6.01e-06.