61244650 ÷ 391 
The aim is to understand the frequency of 391 in 61244650.

Step 1:
391 can be fit into 6 0 times, resulting in a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Append the next digit (1) from the dividend to 6 and continue with: 61 / 391

Moving on to step 2:
When dividing 61 by 391, we get 0 with a remainder of 61.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 61 after subtracting 0 from 61.
Include the next digit (2) from the dividend after 61, then repeat: 612 / 391

On to step 3:
612 divided by 391 is 1 with a remainder of 221.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 391 from 612, we get 221.
Grab the next digit (4) from the dividend, add it to 221, then carry on: 2214 / 391

Moving on to step 4:
When dividing 2214 by 391, we get 5 with a remainder of 259.
The next digit of our result is 5. 
Result so far: 15.0
If we take 1955 away from 2214, we end up with 259.
Fetch the next digit (4) from the dividend, attach it to 259 and continue: 2594 / 391

Going ahead to step 5:
2594 divided by 391 is 6 with a remainder of 248.
Use 6 as the next digit of our solution. 
Result so far: 156.0
Subtract 2346 from 2594 to get 248.
Bring next digit (6) of the dividend behind the 248 and repeat the process: 2486 / 391

Let's proceed to step 6:
391 can be fit into 2486 6 times, resulting in a remainder of 140.
The number 6 becomes the next digit in our result. 
Result so far: 1566.0
Deduct 2346 from 2486 and we're left with 140.
Fetch the next digit (5) from the dividend, attach it to 140 and continue: 1405 / 391

Going ahead to step 7:
When dividing 1405 by 391, we get 3 with a remainder of 232.
Put 3 as the next digit of the answer. 
Result so far: 15663.0
The remainder is 232 after subtracting 1173 from 1405.
Take the next digit (0) from the dividend and append it to 232, then repeat: 2320 / 391

Step 8:
When dividing 2320 by 391, we get 5 with a remainder of 365.
The next digit of our result is 5. 
Result so far: 156635.0
If we subtract 1955 from 2320, we get 365.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3650, and continue the process.

Step 9:
391 goes into 3650 9 times with a remainder of 131.
Write down 9 as next digit of the result. 
Result so far: 156635.9
If we take 3519 away from 3650, we end up with 131.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1310, and continue the process.

Moving on to step 10:
When dividing 1310 by 391, we get 3 with a remainder of 137.
The number 3 becomes the next digit in our result. 
Result so far: 156635.93
The remainder is 137 after subtracting 1173 from 1310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1370, and continue the process.

Advancing to step 11:
391 goes into 1370 3 times with a remainder of 197.
The next digit of our result is 3. 
Result so far: 156635.933
Subtracting 1173 from 1370 leaves us with 197.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1970, and continue the process.

In conclusion, the division gives 156635.933 with a balance of 0.0197.