We look at the division of 70234073 by 404 
The aim is to understand the frequency of 404 in 70234073.

Advancing to step 1:
404 can be fit into 7 0 times, resulting in a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Include the next digit (0) from the dividend after 7, then repeat: 70 / 404

Step 2:
70 divided by 404 is 0 with a remainder of 70.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 70 and we're left with 70.
Grab the next digit (2) from the dividend, add it to 70, then carry on: 702 / 404

On to step 3:
404 goes into 702 1 times with a remainder of 298.
The next digit of our result is 1. 
Result so far: 1.0
If we take 404 away from 702, we end up with 298.
Include the next digit (3) from the dividend after 298, then repeat: 2983 / 404

Going ahead to step 4:
404 goes into 2983 7 times with a remainder of 155.
Put 7 as the next digit of the answer. 
Result so far: 17.0
If we subtract 2828 from 2983, we get 155.
Bring next digit (4) of the dividend behind the 155 and repeat the process: 1554 / 404

Moving on to step 5:
1554 divided by 404 is 3 with a remainder of 342.
The next digit of our result is 3. 
Result so far: 173.0
The remainder is 342 after subtracting 1212 from 1554.
Append the next digit (0) from the dividend to 342 and continue with: 3420 / 404

On to step 6:
When dividing 3420 by 404, we get 8 with a remainder of 188.
Put 8 as the next digit of the answer. 
Result so far: 1738.0
The remainder is 188 after subtracting 3232 from 3420.
Append the next digit (7) from the dividend to 188 and continue with: 1887 / 404

Moving on to step 7:
The number 404 fits into 1887 4 times, leaving a remainder of 271.
Record the quotient 4 as the next digit in the result. 
Result so far: 17384.0
If we take 1616 away from 1887, we end up with 271.
Grab the next digit (3) from the dividend, add it to 271, then carry on: 2713 / 404

Let's proceed to step 8:
If we divide 2713 by 404, we get 6 and a remainder of 289.
Record the quotient 6 as the next digit in the result. 
Result so far: 173846.0
Deduct 2424 from 2713 and we're left with 289.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2890, and continue the process.

Going ahead to step 9:
The number 404 fits into 2890 7 times, leaving a remainder of 62.
The next digit of our result is 7. 
Result so far: 173846.7
If we subtract 2828 from 2890, we get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Let's proceed to step 10:
620 divided by 404 is 1 with a remainder of 216.
The number 1 becomes the next digit in our result. 
Result so far: 173846.71
The remainder is 216 after subtracting 404 from 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

On to step 11:
2160 divided by 404 is 5 with a remainder of 140.
The number 5 becomes the next digit in our result. 
Result so far: 173846.715
Deduct 2020 from 2160 and we're left with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

On to step 12:
When dividing 1400 by 404, we get 3 with a remainder of 188.
The number 3 becomes the next digit in our result. 
Result so far: 173846.7153
Deduct 1212 from 1400 and we're left with 188.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1880, and continue the process.

Step 13:
404 goes into 1880 4 times with a remainder of 264.
The next digit of our result is 4. 
Result so far: 173846.71534
If we take 1616 away from 1880, we end up with 264.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2640, and continue the process.

Moving on to step 14:
404 goes into 2640 6 times with a remainder of 216.
The number 6 becomes the next digit in our result. 
Result so far: 173846.715346
Subtracting 2424 from 2640 leaves us with 216.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

Step 15:
The number 404 fits into 2160 5 times, leaving a remainder of 140.
The next digit of our result is 5. 
Result so far: 173846.7153465
Deduct 2020 from 2160 and we're left with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Going ahead to step 16:
404 goes into 1400 3 times with a remainder of 188.
The next digit of our result is 3. 
Result so far: 173846.71534653
If we take 1212 away from 1400, we end up with 188.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1880, and continue the process.

The final result is 173846.71534653 with a remainder of 1.88e-07.