Let's divide 502138 by 66
The aim is to understand the frequency of 66 in 502138.

On to step 1:
66 can be fit into 5 0 times, resulting in a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Fetch the next digit (0) from the dividend, attach it to 5 and continue: 50 / 66

Moving on to step 2:
66 can be fit into 50 0 times, resulting in a remainder of 50.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 50 and we're left with 50.
Fetch the next digit (2) from the dividend, attach it to 50 and continue: 502 / 66

Advancing to step 3:
When dividing 502 by 66, we get 7 with a remainder of 40.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
If we take 462 away from 502, we end up with 40.
Grab the next digit (1) from the dividend, add it to 40, then carry on: 401 / 66

Step 4:
66 goes into 401 6 times with a remainder of 5.
Put 6 as the next digit of the answer. 
Result so far: 76.0
Deduct 396 from 401 and we're left with 5.
Append the next digit (3) from the dividend to 5 and continue with: 53 / 66

On to step 5:
53 divided by 66 is 0 with a remainder of 53.
Write down 0 as next digit of the result. 
Result so far: 760.0
Subtracting 0 from 53 leaves us with 53.
Fetch the next digit (8) from the dividend, attach it to 53 and continue: 538 / 66

Step 6:
66 can be fit into 538 8 times, resulting in a remainder of 10.
Record the quotient 8 as the next digit in the result. 
Result so far: 7608.0
Subtracting 528 from 538 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 7:
When dividing 100 by 66, we get 1 with a remainder of 34.
The next digit of our result is 1. 
Result so far: 7608.1
If we take 66 away from 100, we end up with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

On to step 8:
If we divide 340 by 66, we get 5 and a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 7608.15
Subtract 330 from 340 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 9:
The number 66 fits into 100 1 times, leaving a remainder of 34.
Write down 1 as next digit of the result. 
Result so far: 7608.151
If we take 66 away from 100, we end up with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Advancing to step 10:
When dividing 340 by 66, we get 5 with a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 7608.1515
Deduct 330 from 340 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 11:
The number 66 fits into 100 1 times, leaving a remainder of 34.
The next digit of our result is 1. 
Result so far: 7608.15151
Deduct 66 from 100 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Let's proceed to step 12:
The number 66 fits into 340 5 times, leaving a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 7608.151515
Subtract 330 from 340 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 13:
The number 66 fits into 100 1 times, leaving a remainder of 34.
Record the quotient 1 as the next digit in the result. 
Result so far: 7608.1515151
Subtract 66 from 100 to get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

On to step 14:
When dividing 340 by 66, we get 5 with a remainder of 10.
The next digit of our result is 5. 
Result so far: 7608.15151515
If we subtract 330 from 340, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final outcome is 7608.15151515, with a leftover of 1e-08.