We're dividing 70241830 by 661 
The aim is to understand the frequency of 661 in 70241830.

Going ahead to step 1:
The number 661 fits into 7 0 times, leaving a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Grab the next digit (0) from the dividend, add it to 7, then carry on: 70 / 661

Step 2:
661 can be fit into 70 0 times, resulting in a remainder of 70.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 70, we end up with 70.
Include the next digit (2) from the dividend after 70, then repeat: 702 / 661

Moving on to step 3:
661 goes into 702 1 times with a remainder of 41.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 661 from 702, we get 41.
Grab the next digit (4) from the dividend, add it to 41, then carry on: 414 / 661

Advancing to step 4:
If we divide 414 by 661, we get 0 and a remainder of 414.
Write down 0 as next digit of the result. 
Result so far: 10.0
Subtract 0 from 414 to get 414.
Take the next digit (1) from the dividend and append it to 414, then repeat: 4141 / 661

Advancing to step 5:
4141 divided by 661 is 6 with a remainder of 175.
Record the quotient 6 as the next digit in the result. 
Result so far: 106.0
If we take 3966 away from 4141, we end up with 175.
Include the next digit (8) from the dividend after 175, then repeat: 1758 / 661

Advancing to step 6:
If we divide 1758 by 661, we get 2 and a remainder of 436.
The next digit of our result is 2. 
Result so far: 1062.0
If we subtract 1322 from 1758, we get 436.
Grab the next digit (3) from the dividend, add it to 436, then carry on: 4363 / 661

Let's proceed to step 7:
When dividing 4363 by 661, we get 6 with a remainder of 397.
Write down 6 as next digit of the result. 
Result so far: 10626.0
Subtracting 3966 from 4363 leaves us with 397.
Append the next digit (0) from the dividend to 397 and continue with: 3970 / 661

On to step 8:
The number 661 fits into 3970 6 times, leaving a remainder of 4.
The next digit of our result is 6. 
Result so far: 106266.0
If we subtract 3966 from 3970, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 9:
661 goes into 40 0 times with a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 106266.0
Deduct 0 from 40 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 10:
If we divide 400 by 661, we get 0 and a remainder of 400.
Record the quotient 0 as the next digit in the result. 
Result so far: 106266.0
Subtracting 0 from 400 leaves us with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

The final outcome is 106266.0, with a leftover of 0.4.