We look at the division of 69903101 by 371 
The aim is to understand the frequency of 371 in 69903101.

Let's proceed to step 1:
371 can be fit into 6 0 times, resulting in a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Bring next digit (9) of the dividend behind the 6 and repeat the process: 69 / 371

Step 2:
371 goes into 69 0 times with a remainder of 69.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 69, we end up with 69.
Take the next digit (9) from the dividend and append it to 69, then repeat: 699 / 371

On to step 3:
371 can be fit into 699 1 times, resulting in a remainder of 328.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 371 away from 699, we end up with 328.
Grab the next digit (0) from the dividend, add it to 328, then carry on: 3280 / 371

Advancing to step 4:
371 can be fit into 3280 8 times, resulting in a remainder of 312.
Use 8 as the next digit of our solution. 
Result so far: 18.0
If we take 2968 away from 3280, we end up with 312.
Fetch the next digit (3) from the dividend, attach it to 312 and continue: 3123 / 371

Advancing to step 5:
When dividing 3123 by 371, we get 8 with a remainder of 155.
Use 8 as the next digit of our solution. 
Result so far: 188.0
Deduct 2968 from 3123 and we're left with 155.
Fetch the next digit (1) from the dividend, attach it to 155 and continue: 1551 / 371

Going ahead to step 6:
The number 371 fits into 1551 4 times, leaving a remainder of 67.
The next digit of our result is 4. 
Result so far: 1884.0
Subtracting 1484 from 1551 leaves us with 67.
Take the next digit (0) from the dividend and append it to 67, then repeat: 670 / 371

Advancing to step 7:
The number 371 fits into 670 1 times, leaving a remainder of 299.
Record the quotient 1 as the next digit in the result. 
Result so far: 18841.0
The remainder is 299 after subtracting 371 from 670.
Append the next digit (1) from the dividend to 299 and continue with: 2991 / 371

On to step 8:
371 goes into 2991 8 times with a remainder of 23.
Put 8 as the next digit of the answer. 
Result so far: 188418.0
If we subtract 2968 from 2991, we get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Step 9:
230 divided by 371 is 0 with a remainder of 230.
Write down 0 as next digit of the result. 
Result so far: 188418.0
Deduct 0 from 230 and we're left with 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

On to step 10:
The number 371 fits into 2300 6 times, leaving a remainder of 74.
The number 6 becomes the next digit in our result. 
Result so far: 188418.06
Subtracting 2226 from 2300 leaves us with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Going ahead to step 11:
740 divided by 371 is 1 with a remainder of 369.
The next digit of our result is 1. 
Result so far: 188418.061
Subtracting 371 from 740 leaves us with 369.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3690, and continue the process.

Let's proceed to step 12:
371 goes into 3690 9 times with a remainder of 351.
The number 9 becomes the next digit in our result. 
Result so far: 188418.0619
If we subtract 3339 from 3690, we get 351.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3510, and continue the process.

Advancing to step 13:
371 can be fit into 3510 9 times, resulting in a remainder of 171.
Write down 9 as next digit of the result. 
Result so far: 188418.06199
Subtracting 3339 from 3510 leaves us with 171.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1710, and continue the process.

The final result is 188418.06199 with a remainder of 0.000171.