We're dividing 39687686 by 943 
The aim is to understand the frequency of 943 in 39687686.

Moving on to step 1:
If we divide 3 by 943, we get 0 and a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 943

On to step 2:
39 divided by 943 is 0 with a remainder of 39.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 39 leaves us with 39.
Fetch the next digit (6) from the dividend, attach it to 39 and continue: 396 / 943

Step 3:
943 goes into 396 0 times with a remainder of 396.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 396 after subtracting 0 from 396.
Fetch the next digit (8) from the dividend, attach it to 396 and continue: 3968 / 943

Going ahead to step 4:
943 can be fit into 3968 4 times, resulting in a remainder of 196.
The next digit of our result is 4. 
Result so far: 4.0
Deduct 3772 from 3968 and we're left with 196.
Take the next digit (7) from the dividend and append it to 196, then repeat: 1967 / 943

Going ahead to step 5:
If we divide 1967 by 943, we get 2 and a remainder of 81.
Record the quotient 2 as the next digit in the result. 
Result so far: 42.0
The remainder is 81 after subtracting 1886 from 1967.
Bring next digit (6) of the dividend behind the 81 and repeat the process: 816 / 943

On to step 6:
The number 943 fits into 816 0 times, leaving a remainder of 816.
The next digit of our result is 0. 
Result so far: 420.0
Subtract 0 from 816 to get 816.
Include the next digit (8) from the dividend after 816, then repeat: 8168 / 943

Advancing to step 7:
943 goes into 8168 8 times with a remainder of 624.
The number 8 becomes the next digit in our result. 
Result so far: 4208.0
If we subtract 7544 from 8168, we get 624.
Take the next digit (6) from the dividend and append it to 624, then repeat: 6246 / 943

Moving on to step 8:
943 can be fit into 6246 6 times, resulting in a remainder of 588.
Write down 6 as next digit of the result. 
Result so far: 42086.0
The remainder is 588 after subtracting 5658 from 6246.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5880, and continue the process.

Moving on to step 9:
943 goes into 5880 6 times with a remainder of 222.
Use 6 as the next digit of our solution. 
Result so far: 42086.6
Subtract 5658 from 5880 to get 222.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2220, and continue the process.

Step 10:
2220 divided by 943 is 2 with a remainder of 334.
Use 2 as the next digit of our solution. 
Result so far: 42086.62
Subtracting 1886 from 2220 leaves us with 334.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3340, and continue the process.

Going ahead to step 11:
When dividing 3340 by 943, we get 3 with a remainder of 511.
Write down 3 as next digit of the result. 
Result so far: 42086.623
Deduct 2829 from 3340 and we're left with 511.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5110, and continue the process.

Step 12:
When dividing 5110 by 943, we get 5 with a remainder of 395.
The number 5 becomes the next digit in our result. 
Result so far: 42086.6235
Subtracting 4715 from 5110 leaves us with 395.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3950, and continue the process.

Going ahead to step 13:
The number 943 fits into 3950 4 times, leaving a remainder of 178.
Use 4 as the next digit of our solution. 
Result so far: 42086.62354
Deduct 3772 from 3950 and we're left with 178.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1780, and continue the process.

Going ahead to step 14:
943 can be fit into 1780 1 times, resulting in a remainder of 837.
Write down 1 as next digit of the result. 
Result so far: 42086.623541
If we subtract 943 from 1780, we get 837.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8370, and continue the process.

Advancing to step 15:
943 goes into 8370 8 times with a remainder of 826.
Record the quotient 8 as the next digit in the result. 
Result so far: 42086.6235418
Subtract 7544 from 8370 to get 826.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8260, and continue the process.

Step 16:
If we divide 8260 by 943, we get 8 and a remainder of 716.
Record the quotient 8 as the next digit in the result. 
Result so far: 42086.62354188
If we subtract 7544 from 8260, we get 716.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7160, and continue the process.

The quotient of the division is 42086.62354188, and the remainder is 7.16e-07.