We look at the division of 66437637 by 611 
The aim is to understand the frequency of 611 in 66437637.

Step 1:
The number 611 fits into 6 0 times, leaving a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 611

Moving on to step 2:
611 goes into 66 0 times with a remainder of 66.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 66 and we're left with 66.
Bring next digit (4) of the dividend behind the 66 and repeat the process: 664 / 611

Moving on to step 3:
664 divided by 611 is 1 with a remainder of 53.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 611 from 664 and we're left with 53.
Append the next digit (3) from the dividend to 53 and continue with: 533 / 611

Advancing to step 4:
When dividing 533 by 611, we get 0 with a remainder of 533.
The next digit of our result is 0. 
Result so far: 10.0
If we subtract 0 from 533, we get 533.
Bring next digit (7) of the dividend behind the 533 and repeat the process: 5337 / 611

Advancing to step 5:
5337 divided by 611 is 8 with a remainder of 449.
The number 8 becomes the next digit in our result. 
Result so far: 108.0
Subtracting 4888 from 5337 leaves us with 449.
Include the next digit (6) from the dividend after 449, then repeat: 4496 / 611

Let's proceed to step 6:
If we divide 4496 by 611, we get 7 and a remainder of 219.
The number 7 becomes the next digit in our result. 
Result so far: 1087.0
Subtracting 4277 from 4496 leaves us with 219.
Take the next digit (3) from the dividend and append it to 219, then repeat: 2193 / 611

Advancing to step 7:
When dividing 2193 by 611, we get 3 with a remainder of 360.
Record the quotient 3 as the next digit in the result. 
Result so far: 10873.0
If we take 1833 away from 2193, we end up with 360.
Take the next digit (7) from the dividend and append it to 360, then repeat: 3607 / 611

Going ahead to step 8:
3607 divided by 611 is 5 with a remainder of 552.
The next digit of our result is 5. 
Result so far: 108735.0
Deduct 3055 from 3607 and we're left with 552.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5520, and continue the process.

Step 9:
If we divide 5520 by 611, we get 9 and a remainder of 21.
Write down 9 as next digit of the result. 
Result so far: 108735.9
Subtracting 5499 from 5520 leaves us with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

On to step 10:
611 can be fit into 210 0 times, resulting in a remainder of 210.
Put 0 as the next digit of the answer. 
Result so far: 108735.9
Subtract 0 from 210 to get 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Moving on to step 11:
If we divide 2100 by 611, we get 3 and a remainder of 267.
The number 3 becomes the next digit in our result. 
Result so far: 108735.903
Subtracting 1833 from 2100 leaves us with 267.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2670, and continue the process.

Let's proceed to step 12:
When dividing 2670 by 611, we get 4 with a remainder of 226.
The next digit of our result is 4. 
Result so far: 108735.9034
Subtract 2444 from 2670 to get 226.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

Advancing to step 13:
The number 611 fits into 2260 3 times, leaving a remainder of 427.
Put 3 as the next digit of the answer. 
Result so far: 108735.90343
Subtracting 1833 from 2260 leaves us with 427.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4270, and continue the process.

Step 14:
611 can be fit into 4270 6 times, resulting in a remainder of 604.
Put 6 as the next digit of the answer. 
Result so far: 108735.903436
Subtracting 3666 from 4270 leaves us with 604.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6040, and continue the process.

Going ahead to step 15:
If we divide 6040 by 611, we get 9 and a remainder of 541.
The next digit of our result is 9. 
Result so far: 108735.9034369
Deduct 5499 from 6040 and we're left with 541.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5410, and continue the process.

Moving on to step 16:
5410 divided by 611 is 8 with a remainder of 522.
The next digit of our result is 8. 
Result so far: 108735.90343698
Deduct 4888 from 5410 and we're left with 522.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5220, and continue the process.

The final outcome is 108735.90343698, with a leftover of 5.22e-07.