We're dividing 65403421 by 943 
The aim is to understand the frequency of 943 in 65403421.

Step 1:
943 goes into 6 0 times with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Fetch the next digit (5) from the dividend, attach it to 6 and continue: 65 / 943

Let's proceed to step 2:
65 divided by 943 is 0 with a remainder of 65.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 65 after subtracting 0 from 65.
Bring next digit (4) of the dividend behind the 65 and repeat the process: 654 / 943

Let's proceed to step 3:
If we divide 654 by 943, we get 0 and a remainder of 654.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 654 to get 654.
Take the next digit (0) from the dividend and append it to 654, then repeat: 6540 / 943

Moving on to step 4:
When dividing 6540 by 943, we get 6 with a remainder of 882.
The next digit of our result is 6. 
Result so far: 6.0
Deduct 5658 from 6540 and we're left with 882.
Grab the next digit (3) from the dividend, add it to 882, then carry on: 8823 / 943

On to step 5:
8823 divided by 943 is 9 with a remainder of 336.
Use 9 as the next digit of our solution. 
Result so far: 69.0
Deduct 8487 from 8823 and we're left with 336.
Grab the next digit (4) from the dividend, add it to 336, then carry on: 3364 / 943

Advancing to step 6:
943 goes into 3364 3 times with a remainder of 535.
Record the quotient 3 as the next digit in the result. 
Result so far: 693.0
Subtract 2829 from 3364 to get 535.
Take the next digit (2) from the dividend and append it to 535, then repeat: 5352 / 943

Moving on to step 7:
943 goes into 5352 5 times with a remainder of 637.
Record the quotient 5 as the next digit in the result. 
Result so far: 6935.0
Subtract 4715 from 5352 to get 637.
Take the next digit (1) from the dividend and append it to 637, then repeat: 6371 / 943

Let's proceed to step 8:
If we divide 6371 by 943, we get 6 and a remainder of 713.
The next digit of our result is 6. 
Result so far: 69356.0
If we subtract 5658 from 6371, we get 713.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7130, and continue the process.

Moving on to step 9:
The number 943 fits into 7130 7 times, leaving a remainder of 529.
Use 7 as the next digit of our solution. 
Result so far: 69356.7
The remainder is 529 after subtracting 6601 from 7130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5290, and continue the process.

On to step 10:
When dividing 5290 by 943, we get 5 with a remainder of 575.
The number 5 becomes the next digit in our result. 
Result so far: 69356.75
If we take 4715 away from 5290, we end up with 575.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5750, and continue the process.

On to step 11:
If we divide 5750 by 943, we get 6 and a remainder of 92.
Write down 6 as next digit of the result. 
Result so far: 69356.756
Subtracting 5658 from 5750 leaves us with 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Going ahead to step 12:
920 divided by 943 is 0 with a remainder of 920.
Put 0 as the next digit of the answer. 
Result so far: 69356.756
If we take 0 away from 920, we end up with 920.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9200, and continue the process.

On to step 13:
943 goes into 9200 9 times with a remainder of 713.
Use 9 as the next digit of our solution. 
Result so far: 69356.75609
Subtract 8487 from 9200 to get 713.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7130, and continue the process.

On to step 14:
If we divide 7130 by 943, we get 7 and a remainder of 529.
The number 7 becomes the next digit in our result. 
Result so far: 69356.756097
Deduct 6601 from 7130 and we're left with 529.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5290, and continue the process.

Moving on to step 15:
943 can be fit into 5290 5 times, resulting in a remainder of 575.
The number 5 becomes the next digit in our result. 
Result so far: 69356.7560975
Subtracting 4715 from 5290 leaves us with 575.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5750, and continue the process.

Step 16:
The number 943 fits into 5750 6 times, leaving a remainder of 92.
Record the quotient 6 as the next digit in the result. 
Result so far: 69356.75609756
If we take 5658 away from 5750, we end up with 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Our division results in 69356.75609756 with a remaining 9.2e-08.