7129730 ÷ 394 
The aim is to understand the frequency of 394 in 7129730.

On to step 1:
The number 394 fits into 7 0 times, leaving a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Include the next digit (1) from the dividend after 7, then repeat: 71 / 394

Advancing to step 2:
394 goes into 71 0 times with a remainder of 71.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 71 after subtracting 0 from 71.
Include the next digit (2) from the dividend after 71, then repeat: 712 / 394

Moving on to step 3:
394 goes into 712 1 times with a remainder of 318.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 394 from 712 to get 318.
Bring next digit (9) of the dividend behind the 318 and repeat the process: 3189 / 394

Moving on to step 4:
394 goes into 3189 8 times with a remainder of 37.
Use 8 as the next digit of our solution. 
Result so far: 18.0
Subtract 3152 from 3189 to get 37.
Include the next digit (7) from the dividend after 37, then repeat: 377 / 394

Advancing to step 5:
When dividing 377 by 394, we get 0 with a remainder of 377.
Use 0 as the next digit of our solution. 
Result so far: 180.0
If we subtract 0 from 377, we get 377.
Append the next digit (3) from the dividend to 377 and continue with: 3773 / 394

Going ahead to step 6:
394 can be fit into 3773 9 times, resulting in a remainder of 227.
Write down 9 as next digit of the result. 
Result so far: 1809.0
If we subtract 3546 from 3773, we get 227.
Include the next digit (0) from the dividend after 227, then repeat: 2270 / 394

Step 7:
The number 394 fits into 2270 5 times, leaving a remainder of 300.
The next digit of our result is 5. 
Result so far: 18095.0
If we subtract 1970 from 2270, we get 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Moving on to step 8:
If we divide 3000 by 394, we get 7 and a remainder of 242.
Put 7 as the next digit of the answer. 
Result so far: 18095.7
If we subtract 2758 from 3000, we get 242.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2420, and continue the process.

Moving on to step 9:
2420 divided by 394 is 6 with a remainder of 56.
The next digit of our result is 6. 
Result so far: 18095.76
If we take 2364 away from 2420, we end up with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Moving on to step 10:
When dividing 560 by 394, we get 1 with a remainder of 166.
Write down 1 as next digit of the result. 
Result so far: 18095.761
Subtracting 394 from 560 leaves us with 166.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1660, and continue the process.

Step 11:
394 goes into 1660 4 times with a remainder of 84.
Write down 4 as next digit of the result. 
Result so far: 18095.7614
If we take 1576 away from 1660, we end up with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Moving on to step 12:
394 goes into 840 2 times with a remainder of 52.
The number 2 becomes the next digit in our result. 
Result so far: 18095.76142
Deduct 788 from 840 and we're left with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Let's proceed to step 13:
The number 394 fits into 520 1 times, leaving a remainder of 126.
Put 1 as the next digit of the answer. 
Result so far: 18095.761421
If we take 394 away from 520, we end up with 126.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1260, and continue the process.

On to step 14:
394 goes into 1260 3 times with a remainder of 78.
Use 3 as the next digit of our solution. 
Result so far: 18095.7614213
Deduct 1182 from 1260 and we're left with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Let's proceed to step 15:
The number 394 fits into 780 1 times, leaving a remainder of 386.
Write down 1 as next digit of the result. 
Result so far: 18095.76142131
Deduct 394 from 780 and we're left with 386.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3860, and continue the process.

The quotient of the division is 18095.76142131, and the remainder is 3.86e-07.