We're dividing 66390207 by 340 
The aim is to understand the frequency of 340 in 66390207.

Let's proceed to step 1:
6 divided by 340 is 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 340

Step 2:
If we divide 66 by 340, we get 0 and a remainder of 66.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 66 and we're left with 66.
Fetch the next digit (3) from the dividend, attach it to 66 and continue: 663 / 340

Moving on to step 3:
340 goes into 663 1 times with a remainder of 323.
The next digit of our result is 1. 
Result so far: 1.0
If we take 340 away from 663, we end up with 323.
Take the next digit (9) from the dividend and append it to 323, then repeat: 3239 / 340

Going ahead to step 4:
If we divide 3239 by 340, we get 9 and a remainder of 179.
Use 9 as the next digit of our solution. 
Result so far: 19.0
If we subtract 3060 from 3239, we get 179.
Fetch the next digit (0) from the dividend, attach it to 179 and continue: 1790 / 340

On to step 5:
The number 340 fits into 1790 5 times, leaving a remainder of 90.
Use 5 as the next digit of our solution. 
Result so far: 195.0
Subtracting 1700 from 1790 leaves us with 90.
Take the next digit (2) from the dividend and append it to 90, then repeat: 902 / 340

Let's proceed to step 6:
If we divide 902 by 340, we get 2 and a remainder of 222.
The number 2 becomes the next digit in our result. 
Result so far: 1952.0
Subtracting 680 from 902 leaves us with 222.
Append the next digit (0) from the dividend to 222 and continue with: 2220 / 340

Advancing to step 7:
If we divide 2220 by 340, we get 6 and a remainder of 180.
Record the quotient 6 as the next digit in the result. 
Result so far: 19526.0
Subtracting 2040 from 2220 leaves us with 180.
Fetch the next digit (7) from the dividend, attach it to 180 and continue: 1807 / 340

Advancing to step 8:
340 can be fit into 1807 5 times, resulting in a remainder of 107.
The next digit of our result is 5. 
Result so far: 195265.0
Subtract 1700 from 1807 to get 107.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1070, and continue the process.

Advancing to step 9:
If we divide 1070 by 340, we get 3 and a remainder of 50.
Record the quotient 3 as the next digit in the result. 
Result so far: 195265.3
If we take 1020 away from 1070, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 10:
340 goes into 500 1 times with a remainder of 160.
Use 1 as the next digit of our solution. 
Result so far: 195265.31
Subtract 340 from 500 to get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Let's proceed to step 11:
If we divide 1600 by 340, we get 4 and a remainder of 240.
Put 4 as the next digit of the answer. 
Result so far: 195265.314
The remainder is 240 after subtracting 1360 from 1600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Going ahead to step 12:
When dividing 2400 by 340, we get 7 with a remainder of 20.
The next digit of our result is 7. 
Result so far: 195265.3147
The remainder is 20 after subtracting 2380 from 2400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 13:
340 can be fit into 200 0 times, resulting in a remainder of 200.
Use 0 as the next digit of our solution. 
Result so far: 195265.3147
Deduct 0 from 200 and we're left with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

On to step 14:
When dividing 2000 by 340, we get 5 with a remainder of 300.
Record the quotient 5 as the next digit in the result. 
Result so far: 195265.314705
Subtracting 1700 from 2000 leaves us with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

On to step 15:
3000 divided by 340 is 8 with a remainder of 280.
The number 8 becomes the next digit in our result. 
Result so far: 195265.3147058
Subtract 2720 from 3000 to get 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Step 16:
When dividing 2800 by 340, we get 8 with a remainder of 80.
The next digit of our result is 8. 
Result so far: 195265.31470588
If we subtract 2720 from 2800, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

In conclusion, the division gives 195265.31470588 with a balance of 8e-08.