We're dividing 66293640 by 356 
The aim is to understand the frequency of 356 in 66293640.

Advancing to step 1:
356 goes into 6 0 times with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 356

Moving on to step 2:
If we divide 66 by 356, we get 0 and a remainder of 66.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 66 leaves us with 66.
Take the next digit (2) from the dividend and append it to 66, then repeat: 662 / 356

On to step 3:
356 can be fit into 662 1 times, resulting in a remainder of 306.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 356 from 662 to get 306.
Append the next digit (9) from the dividend to 306 and continue with: 3069 / 356

Let's proceed to step 4:
If we divide 3069 by 356, we get 8 and a remainder of 221.
The next digit of our result is 8. 
Result so far: 18.0
If we subtract 2848 from 3069, we get 221.
Append the next digit (3) from the dividend to 221 and continue with: 2213 / 356

Let's proceed to step 5:
The number 356 fits into 2213 6 times, leaving a remainder of 77.
Use 6 as the next digit of our solution. 
Result so far: 186.0
If we take 2136 away from 2213, we end up with 77.
Include the next digit (6) from the dividend after 77, then repeat: 776 / 356

Let's proceed to step 6:
356 goes into 776 2 times with a remainder of 64.
Put 2 as the next digit of the answer. 
Result so far: 1862.0
Subtracting 712 from 776 leaves us with 64.
Bring next digit (4) of the dividend behind the 64 and repeat the process: 644 / 356

Step 7:
356 can be fit into 644 1 times, resulting in a remainder of 288.
Use 1 as the next digit of our solution. 
Result so far: 18621.0
Subtract 356 from 644 to get 288.
Bring next digit (0) of the dividend behind the 288 and repeat the process: 2880 / 356

Advancing to step 8:
If we divide 2880 by 356, we get 8 and a remainder of 32.
The next digit of our result is 8. 
Result so far: 186218.0
If we subtract 2848 from 2880, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 9:
If we divide 320 by 356, we get 0 and a remainder of 320.
Put 0 as the next digit of the answer. 
Result so far: 186218.0
Subtract 0 from 320 to get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Moving on to step 10:
The number 356 fits into 3200 8 times, leaving a remainder of 352.
Put 8 as the next digit of the answer. 
Result so far: 186218.08
If we subtract 2848 from 3200, we get 352.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

Let's proceed to step 11:
356 goes into 3520 9 times with a remainder of 316.
The number 9 becomes the next digit in our result. 
Result so far: 186218.089
Deduct 3204 from 3520 and we're left with 316.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

On to step 12:
3160 divided by 356 is 8 with a remainder of 312.
The number 8 becomes the next digit in our result. 
Result so far: 186218.0898
The remainder is 312 after subtracting 2848 from 3160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3120, and continue the process.

Step 13:
The number 356 fits into 3120 8 times, leaving a remainder of 272.
Write down 8 as next digit of the result. 
Result so far: 186218.08988
Subtracting 2848 from 3120 leaves us with 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Our division results in 186218.08988 with a remaining 0.000272.