68455319 ÷ 423 
The aim is to understand the frequency of 423 in 68455319.

On to step 1:
When dividing 6 by 423, we get 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Fetch the next digit (8) from the dividend, attach it to 6 and continue: 68 / 423

Let's proceed to step 2:
423 can be fit into 68 0 times, resulting in a remainder of 68.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 68, we end up with 68.
Include the next digit (4) from the dividend after 68, then repeat: 684 / 423

Going ahead to step 3:
684 divided by 423 is 1 with a remainder of 261.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 423 from 684, we get 261.
Bring next digit (5) of the dividend behind the 261 and repeat the process: 2615 / 423

On to step 4:
423 goes into 2615 6 times with a remainder of 77.
The number 6 becomes the next digit in our result. 
Result so far: 16.0
The remainder is 77 after subtracting 2538 from 2615.
Include the next digit (5) from the dividend after 77, then repeat: 775 / 423

Moving on to step 5:
423 can be fit into 775 1 times, resulting in a remainder of 352.
Write down 1 as next digit of the result. 
Result so far: 161.0
Deduct 423 from 775 and we're left with 352.
Fetch the next digit (3) from the dividend, attach it to 352 and continue: 3523 / 423

Going ahead to step 6:
The number 423 fits into 3523 8 times, leaving a remainder of 139.
Write down 8 as next digit of the result. 
Result so far: 1618.0
If we take 3384 away from 3523, we end up with 139.
Append the next digit (1) from the dividend to 139 and continue with: 1391 / 423

On to step 7:
When dividing 1391 by 423, we get 3 with a remainder of 122.
Write down 3 as next digit of the result. 
Result so far: 16183.0
If we take 1269 away from 1391, we end up with 122.
Append the next digit (9) from the dividend to 122 and continue with: 1229 / 423

Going ahead to step 8:
423 can be fit into 1229 2 times, resulting in a remainder of 383.
Use 2 as the next digit of our solution. 
Result so far: 161832.0
Subtract 846 from 1229 to get 383.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3830, and continue the process.

Let's proceed to step 9:
The number 423 fits into 3830 9 times, leaving a remainder of 23.
The next digit of our result is 9. 
Result so far: 161832.9
The remainder is 23 after subtracting 3807 from 3830.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Moving on to step 10:
423 can be fit into 230 0 times, resulting in a remainder of 230.
Put 0 as the next digit of the answer. 
Result so far: 161832.9
Subtract 0 from 230 to get 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Moving on to step 11:
2300 divided by 423 is 5 with a remainder of 185.
Use 5 as the next digit of our solution. 
Result so far: 161832.905
If we take 2115 away from 2300, we end up with 185.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1850, and continue the process.

Let's proceed to step 12:
423 can be fit into 1850 4 times, resulting in a remainder of 158.
Put 4 as the next digit of the answer. 
Result so far: 161832.9054
If we subtract 1692 from 1850, we get 158.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1580, and continue the process.

Let's proceed to step 13:
1580 divided by 423 is 3 with a remainder of 311.
The number 3 becomes the next digit in our result. 
Result so far: 161832.90543
If we take 1269 away from 1580, we end up with 311.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3110, and continue the process.

Advancing to step 14:
423 goes into 3110 7 times with a remainder of 149.
The number 7 becomes the next digit in our result. 
Result so far: 161832.905437
Subtracting 2961 from 3110 leaves us with 149.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1490, and continue the process.

Moving on to step 15:
If we divide 1490 by 423, we get 3 and a remainder of 221.
Put 3 as the next digit of the answer. 
Result so far: 161832.9054373
Subtracting 1269 from 1490 leaves us with 221.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2210, and continue the process.

Advancing to step 16:
423 goes into 2210 5 times with a remainder of 95.
Record the quotient 5 as the next digit in the result. 
Result so far: 161832.90543735
Deduct 2115 from 2210 and we're left with 95.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

The final outcome is 161832.90543735, with a leftover of 9.5e-08.