We look at the division of 75459815 by 361 
The aim is to understand the frequency of 361 in 75459815.

Advancing to step 1:
The number 361 fits into 7 0 times, leaving a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Append the next digit (5) from the dividend to 7 and continue with: 75 / 361

Advancing to step 2:
When dividing 75 by 361, we get 0 with a remainder of 75.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 75 and we're left with 75.
Fetch the next digit (4) from the dividend, attach it to 75 and continue: 754 / 361

Advancing to step 3:
361 goes into 754 2 times with a remainder of 32.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Deduct 722 from 754 and we're left with 32.
Bring next digit (5) of the dividend behind the 32 and repeat the process: 325 / 361

On to step 4:
The number 361 fits into 325 0 times, leaving a remainder of 325.
The next digit of our result is 0. 
Result so far: 20.0
Deduct 0 from 325 and we're left with 325.
Append the next digit (9) from the dividend to 325 and continue with: 3259 / 361

Step 5:
When dividing 3259 by 361, we get 9 with a remainder of 10.
The next digit of our result is 9. 
Result so far: 209.0
Deduct 3249 from 3259 and we're left with 10.
Grab the next digit (8) from the dividend, add it to 10, then carry on: 108 / 361

Advancing to step 6:
361 goes into 108 0 times with a remainder of 108.
The number 0 becomes the next digit in our result. 
Result so far: 2090.0
The remainder is 108 after subtracting 0 from 108.
Fetch the next digit (1) from the dividend, attach it to 108 and continue: 1081 / 361

Advancing to step 7:
If we divide 1081 by 361, we get 2 and a remainder of 359.
The number 2 becomes the next digit in our result. 
Result so far: 20902.0
Deduct 722 from 1081 and we're left with 359.
Fetch the next digit (5) from the dividend, attach it to 359 and continue: 3595 / 361

Moving on to step 8:
361 goes into 3595 9 times with a remainder of 346.
The number 9 becomes the next digit in our result. 
Result so far: 209029.0
Subtracting 3249 from 3595 leaves us with 346.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3460, and continue the process.

Moving on to step 9:
361 goes into 3460 9 times with a remainder of 211.
The next digit of our result is 9. 
Result so far: 209029.9
Subtract 3249 from 3460 to get 211.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2110, and continue the process.

Going ahead to step 10:
The number 361 fits into 2110 5 times, leaving a remainder of 305.
The next digit of our result is 5. 
Result so far: 209029.95
Subtracting 1805 from 2110 leaves us with 305.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3050, and continue the process.

Step 11:
When dividing 3050 by 361, we get 8 with a remainder of 162.
Record the quotient 8 as the next digit in the result. 
Result so far: 209029.958
If we take 2888 away from 3050, we end up with 162.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1620, and continue the process.

Moving on to step 12:
When dividing 1620 by 361, we get 4 with a remainder of 176.
Record the quotient 4 as the next digit in the result. 
Result so far: 209029.9584
Deduct 1444 from 1620 and we're left with 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Moving on to step 13:
361 can be fit into 1760 4 times, resulting in a remainder of 316.
Record the quotient 4 as the next digit in the result. 
Result so far: 209029.95844
The remainder is 316 after subtracting 1444 from 1760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

The final result is 209029.95844 with a remainder of 0.000316.