We're dividing 68423263 by 421 
The aim is to understand the frequency of 421 in 68423263.

Advancing to step 1:
421 can be fit into 6 0 times, resulting in a remainder of 6.
Use 0 as the next digit of our solution. 
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 / 421

Advancing to step 2:
If we divide 68 by 421, we get 0 and a remainder of 68.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 68 and we're left with 68.
Take the next digit (4) from the dividend and append it to 68, then repeat: 684 / 421

Advancing to step 3:
When dividing 684 by 421, we get 1 with a remainder of 263.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 421 from 684 leaves us with 263.
Take the next digit (2) from the dividend and append it to 263, then repeat: 2632 / 421

Going ahead to step 4:
421 goes into 2632 6 times with a remainder of 106.
Record the quotient 6 as the next digit in the result. 
Result so far: 16.0
Deduct 2526 from 2632 and we're left with 106.
Grab the next digit (3) from the dividend, add it to 106, then carry on: 1063 / 421

On to step 5:
If we divide 1063 by 421, we get 2 and a remainder of 221.
The next digit of our result is 2. 
Result so far: 162.0
Subtracting 842 from 1063 leaves us with 221.
Append the next digit (2) from the dividend to 221 and continue with: 2212 / 421

Step 6:
When dividing 2212 by 421, we get 5 with a remainder of 107.
Use 5 as the next digit of our solution. 
Result so far: 1625.0
Subtract 2105 from 2212 to get 107.
Fetch the next digit (6) from the dividend, attach it to 107 and continue: 1076 / 421

Advancing to step 7:
421 can be fit into 1076 2 times, resulting in a remainder of 234.
Record the quotient 2 as the next digit in the result. 
Result so far: 16252.0
Subtracting 842 from 1076 leaves us with 234.
Grab the next digit (3) from the dividend, add it to 234, then carry on: 2343 / 421

Step 8:
The number 421 fits into 2343 5 times, leaving a remainder of 238.
Put 5 as the next digit of the answer. 
Result so far: 162525.0
If we subtract 2105 from 2343, we get 238.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

Step 9:
If we divide 2380 by 421, we get 5 and a remainder of 275.
Write down 5 as next digit of the result. 
Result so far: 162525.5
Deduct 2105 from 2380 and we're left with 275.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2750, and continue the process.

On to step 10:
If we divide 2750 by 421, we get 6 and a remainder of 224.
Record the quotient 6 as the next digit in the result. 
Result so far: 162525.56
The remainder is 224 after subtracting 2526 from 2750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

On to step 11:
If we divide 2240 by 421, we get 5 and a remainder of 135.
The number 5 becomes the next digit in our result. 
Result so far: 162525.565
If we take 2105 away from 2240, we end up with 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Moving on to step 12:
The number 421 fits into 1350 3 times, leaving a remainder of 87.
Write down 3 as next digit of the result. 
Result so far: 162525.5653
If we subtract 1263 from 1350, we get 87.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

On to step 13:
If we divide 870 by 421, we get 2 and a remainder of 28.
Put 2 as the next digit of the answer. 
Result so far: 162525.56532
If we subtract 842 from 870, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 14:
If we divide 280 by 421, we get 0 and a remainder of 280.
The number 0 becomes the next digit in our result. 
Result so far: 162525.56532
If we take 0 away from 280, we end up with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Going ahead to step 15:
The number 421 fits into 2800 6 times, leaving a remainder of 274.
Put 6 as the next digit of the answer. 
Result so far: 162525.5653206
Deduct 2526 from 2800 and we're left with 274.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2740, and continue the process.

Advancing to step 16:
421 goes into 2740 6 times with a remainder of 214.
Record the quotient 6 as the next digit in the result. 
Result so far: 162525.56532066
The remainder is 214 after subtracting 2526 from 2740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2140, and continue the process.

In conclusion, the division gives 162525.56532066 with a balance of 2.14e-07.