70213875 ÷ 975 
The aim is to understand the frequency of 975 in 70213875.

On to step 1:
When dividing 7 by 975, we get 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Include the next digit (0) from the dividend after 7, then repeat: 70 / 975

Moving on to step 2:
70 divided by 975 is 0 with a remainder of 70.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 70 and we're left with 70.
Take the next digit (2) from the dividend and append it to 70, then repeat: 702 / 975

On to step 3:
The number 975 fits into 702 0 times, leaving a remainder of 702.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 702 leaves us with 702.
Append the next digit (1) from the dividend to 702 and continue with: 7021 / 975

Step 4:
If we divide 7021 by 975, we get 7 and a remainder of 196.
The next digit of our result is 7. 
Result so far: 7.0
Deduct 6825 from 7021 and we're left with 196.
Take the next digit (3) from the dividend and append it to 196, then repeat: 1963 / 975

Let's proceed to step 5:
975 can be fit into 1963 2 times, resulting in a remainder of 13.
Put 2 as the next digit of the answer. 
Result so far: 72.0
Subtract 1950 from 1963 to get 13.
Include the next digit (8) from the dividend after 13, then repeat: 138 / 975

Moving on to step 6:
138 divided by 975 is 0 with a remainder of 138.
The next digit of our result is 0. 
Result so far: 720.0
Deduct 0 from 138 and we're left with 138.
Take the next digit (7) from the dividend and append it to 138, then repeat: 1387 / 975

On to step 7:
If we divide 1387 by 975, we get 1 and a remainder of 412.
Write down 1 as next digit of the result. 
Result so far: 7201.0
Subtract 975 from 1387 to get 412.
Grab the next digit (5) from the dividend, add it to 412, then carry on: 4125 / 975

Let's proceed to step 8:
The number 975 fits into 4125 4 times, leaving a remainder of 225.
Record the quotient 4 as the next digit in the result. 
Result so far: 72014.0
The remainder is 225 after subtracting 3900 from 4125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Advancing to step 9:
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: 72014.2
If we subtract 1950 from 2250, we get 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Moving on to step 10:
3000 divided by 975 is 3 with a remainder of 75.
Use 3 as the next digit of our solution. 
Result so far: 72014.23
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.

On to step 11:
975 goes into 750 0 times with a remainder of 750.
The number 0 becomes the next digit in our result. 
Result so far: 72014.23
Subtracting 0 from 750 leaves us with 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7500, and continue the process.

Advancing to step 12:
975 goes into 7500 7 times with a remainder of 675.
Record the quotient 7 as the next digit in the result. 
Result so far: 72014.2307
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.

Let's proceed to step 13:
If we divide 6750 by 975, we get 6 and a remainder of 900.
Use 6 as the next digit of our solution. 
Result so far: 72014.23076
Subtract 5850 from 6750 to 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.

Let's proceed to step 14:
975 goes into 9000 9 times with a remainder of 225.
Record the quotient 9 as the next digit in the result. 
Result so far: 72014.230769
If we take 8775 away from 9000, we end up 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.

Let's proceed to step 15:
If we divide 2250 by 975, we get 2 and a remainder of 300.
Use 2 as the next digit of our solution. 
Result so far: 72014.2307692
Subtract 1950 from 2250 to get 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Step 16:
3000 divided by 975 is 3 with a remainder of 75.
The number 3 becomes the next digit in our result. 
Result so far: 72014.23076923
Subtracting 2925 from 3000 leaves us 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.

The final outcome is 72014.23076923, with a leftover of 7.5e-08.