We're dividing 9941739 by 423 
The aim is to understand the frequency of 423 in 9941739.

On to step 1:
The number 423 fits into 9 0 times, leaving a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Append the next digit (9) from the dividend to 9 and continue with: 99 / 423

Going ahead to step 2:
The number 423 fits into 99 0 times, leaving a remainder of 99.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 99 after subtracting 0 from 99.
Fetch the next digit (4) from the dividend, attach it to 99 and continue: 994 / 423

Step 3:
The number 423 fits into 994 2 times, leaving a remainder of 148.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we take 846 away from 994, we end up with 148.
Grab the next digit (1) from the dividend, add it to 148, then carry on: 1481 / 423

Going ahead to step 4:
1481 divided by 423 is 3 with a remainder of 212.
Record the quotient 3 as the next digit in the result. 
Result so far: 23.0
The remainder is 212 after subtracting 1269 from 1481.
Include the next digit (7) from the dividend after 212, then repeat: 2127 / 423

Moving on to step 5:
If we divide 2127 by 423, we get 5 and a remainder of 12.
Write down 5 as next digit of the result. 
Result so far: 235.0
The remainder is 12 after subtracting 2115 from 2127.
Append the next digit (3) from the dividend to 12 and continue with: 123 / 423

Advancing to step 6:
423 can be fit into 123 0 times, resulting in a remainder of 123.
Write down 0 as next digit of the result. 
Result so far: 2350.0
If we subtract 0 from 123, we get 123.
Bring next digit (9) of the dividend behind the 123 and repeat the process: 1239 / 423

Let's proceed to step 7:
1239 divided by 423 is 2 with a remainder of 393.
Use 2 as the next digit of our solution. 
Result so far: 23502.0
If we subtract 846 from 1239, we get 393.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3930, and continue the process.

Let's proceed to step 8:
If we divide 3930 by 423, we get 9 and a remainder of 123.
Record the quotient 9 as the next digit in the result. 
Result so far: 23502.9
If we take 3807 away from 3930, we end up with 123.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1230, and continue the process.

Going ahead to step 9:
1230 divided by 423 is 2 with a remainder of 384.
The number 2 becomes the next digit in our result. 
Result so far: 23502.92
Subtracting 846 from 1230 leaves us with 384.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

Advancing to step 10:
423 goes into 3840 9 times with a remainder of 33.
Use 9 as the next digit of our solution. 
Result so far: 23502.929
The remainder is 33 after subtracting 3807 from 3840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Let's proceed to step 11:
If we divide 330 by 423, we get 0 and a remainder of 330.
The next digit of our result is 0. 
Result so far: 23502.929
Deduct 0 from 330 and we're left with 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

Let's proceed to step 12:
The number 423 fits into 3300 7 times, leaving a remainder of 339.
The next digit of our result is 7. 
Result so far: 23502.92907
If we take 2961 away from 3300, we end up with 339.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3390, and continue the process.

Going ahead to step 13:
If we divide 3390 by 423, we get 8 and a remainder of 6.
Put 8 as the next digit of the answer. 
Result so far: 23502.929078
Subtracting 3384 from 3390 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 14:
When dividing 60 by 423, we get 0 with a remainder of 60.
The next digit of our result is 0. 
Result so far: 23502.929078
The remainder is 60 after subtracting 0 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 15:
423 goes into 600 1 times with a remainder of 177.
Put 1 as the next digit of the answer. 
Result so far: 23502.92907801
Deduct 423 from 600 and we're left with 177.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1770, and continue the process.

After the division, we end up with 23502.92907801 and a remainder of 1.77e-07.