We divide 61510787 by 393
The aim is to understand the frequency of 393 in 61510787.

On to step 1:
The number 393 fits into 6 0 times, leaving a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Include the next digit (1) from the dividend after 6, then repeat: 61 / 393

Going ahead to step 2:
If we divide 61 by 393, we get 0 and a remainder of 61.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 61 leaves us with 61.
Take the next digit (5) from the dividend and append it to 61, then repeat: 615 / 393

Advancing to step 3:
If we divide 615 by 393, we get 1 and a remainder of 222.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 222 after subtracting 393 from 615.
Bring next digit (1) of the dividend behind the 222 and repeat the process: 2221 / 393

Advancing to step 4:
2221 divided by 393 is 5 with a remainder of 256.
Write down 5 as next digit of the result. 
Result so far: 15.0
Subtracting 1965 from 2221 leaves us with 256.
Include the next digit (0) from the dividend after 256, then repeat: 2560 / 393

On to step 5:
The number 393 fits into 2560 6 times, leaving a remainder of 202.
The number 6 becomes the next digit in our result. 
Result so far: 156.0
The remainder is 202 after subtracting 2358 from 2560.
Fetch the next digit (7) from the dividend, attach it to 202 and continue: 2027 / 393

Going ahead to step 6:
When dividing 2027 by 393, we get 5 with a remainder of 62.
Put 5 as the next digit of the answer. 
Result so far: 1565.0
Subtracting 1965 from 2027 leaves us with 62.
Fetch the next digit (8) from the dividend, attach it to 62 and continue: 628 / 393

On to step 7:
If we divide 628 by 393, we get 1 and a remainder of 235.
Write down 1 as next digit of the result. 
Result so far: 15651.0
If we take 393 away from 628, we end up with 235.
Include the next digit (7) from the dividend after 235, then repeat: 2357 / 393

Going ahead to step 8:
393 can be fit into 2357 5 times, resulting in a remainder of 392.
Record the quotient 5 as the next digit in the result. 
Result so far: 156515.0
The remainder is 392 after subtracting 1965 from 2357.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Moving on to step 9:
If we divide 3920 by 393, we get 9 and a remainder of 383.
Put 9 as the next digit of the answer. 
Result so far: 156515.9
If we take 3537 away from 3920, we end up with 383.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3830, and continue the process.

Step 10:
If we divide 3830 by 393, we get 9 and a remainder of 293.
Put 9 as the next digit of the answer. 
Result so far: 156515.99
Deduct 3537 from 3830 and we're left with 293.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2930, and continue the process.

After the division, we end up with 156515.99 and a remainder of 0.293.