We look at the division of 71578194 by 975 
The aim is to understand the frequency of 975 in 71578194.

Going ahead to step 1:
975 can be fit into 7 0 times, resulting in a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Append the next digit (1) from the dividend to 7 and continue with: 71 / 975

Going ahead to step 2:
71 divided by 975 is 0 with a remainder of 71.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 71 leaves us with 71.
Fetch the next digit (5) from the dividend, attach it to 71 and continue: 715 / 975

Moving on to step 3:
When dividing 715 by 975, we get 0 with a remainder of 715.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 715 and we're left with 715.
Append the next digit (7) from the dividend to 715 and continue with: 7157 / 975

Advancing to step 4:
When dividing 7157 by 975, we get 7 with a remainder of 332.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
If we take 6825 away from 7157, we end up with 332.
Take the next digit (8) from the dividend and append it to 332, then repeat: 3328 / 975

Let's proceed to step 5:
When dividing 3328 by 975, we get 3 with a remainder of 403.
The next digit of our result is 3. 
Result so far: 73.0
If we subtract 2925 from 3328, we get 403.
Fetch the next digit (1) from the dividend, attach it to 403 and continue: 4031 / 975

On to step 6:
The number 975 fits into 4031 4 times, leaving a remainder of 131.
Put 4 as the next digit of the answer. 
Result so far: 734.0
If we take 3900 away from 4031, we end up with 131.
Bring next digit (9) of the dividend behind the 131 and repeat the process: 1319 / 975

Advancing to step 7:
975 goes into 1319 1 times with a remainder of 344.
Use 1 as the next digit of our solution. 
Result so far: 7341.0
If we subtract 975 from 1319, we get 344.
Grab the next digit (4) from the dividend, add it to 344, then carry on: 3444 / 975

Moving on to step 8:
975 can be fit into 3444 3 times, resulting in a remainder of 519.
Use 3 as the next digit of our solution. 
Result so far: 73413.0
Subtracting 2925 from 3444 leaves us with 519.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5190, and continue the process.

On to step 9:
975 goes into 5190 5 times with a remainder of 315.
Record the quotient 5 as the next digit in the result. 
Result so far: 73413.5
If we take 4875 away from 5190, we end up with 315.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3150, and continue the process.

Advancing to step 10:
975 goes into 3150 3 times with a remainder of 225.
Use 3 as the next digit of our solution. 
Result so far: 73413.53
Subtracting 2925 from 3150 leaves us with 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Moving on to step 11:
When dividing 2250 by 975, we get 2 with a remainder of 300.
The number 2 becomes the next digit in our result. 
Result so far: 73413.532
The remainder is 300 after subtracting 1950 from 2250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Step 12:
975 goes into 3000 3 times with a remainder of 75.
Record the quotient 3 as the next digit in the result. 
Result so far: 73413.5323
Deduct 2925 from 3000 and we're left with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Moving on to step 13:
If we divide 750 by 975, we get 0 and a remainder of 750.
Record the quotient 0 as the next digit in the result. 
Result so far: 73413.5323
If we subtract 0 from 750, we get 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7500, and continue the process.

On to step 14:
The number 975 fits into 7500 7 times, leaving a remainder of 675.
Write down 7 as next digit of the result. 
Result so far: 73413.532307
The remainder is 675 after subtracting 6825 from 7500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6750, and continue the process.

Step 15:
6750 divided by 975 is 6 with a remainder of 900.
Use 6 as the next digit of our solution. 
Result so far: 73413.5323076
If we subtract 5850 from 6750, we get 900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9000, and continue the process.

Moving on to step 16:
The number 975 fits into 9000 9 times, leaving a remainder of 225.
Write down 9 as next digit of the result. 
Result so far: 73413.53230769
If we subtract 8775 from 9000, we get 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

The final result is 73413.53230769 with a remainder of 2.25e-07.