We're dividing 70422049 by 225 
The aim is to understand the frequency of 225 in 70422049.

Step 1:
225 goes into 7 0 times with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Include the next digit (0) from the dividend after 7, then repeat: 70 / 225

Advancing to step 2:
225 can be fit into 70 0 times, resulting in a remainder of 70.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 70 leaves us with 70.
Append the next digit (4) from the dividend to 70 and continue with: 704 / 225

On to step 3:
If we divide 704 by 225, we get 3 and a remainder of 29.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
The remainder is 29 after subtracting 675 from 704.
Take the next digit (2) from the dividend and append it to 29, then repeat: 292 / 225

Advancing to step 4:
292 divided by 225 is 1 with a remainder of 67.
The next digit of our result is 1. 
Result so far: 31.0
If we take 225 away from 292, we end up with 67.
Take the next digit (2) from the dividend and append it to 67, then repeat: 672 / 225

Going ahead to step 5:
672 divided by 225 is 2 with a remainder of 222.
Use 2 as the next digit of our solution. 
Result so far: 312.0
If we subtract 450 from 672, we get 222.
Fetch the next digit (0) from the dividend, attach it to 222 and continue: 2220 / 225

Step 6:
225 can be fit into 2220 9 times, resulting in a remainder of 195.
Record the quotient 9 as the next digit in the result. 
Result so far: 3129.0
Deduct 2025 from 2220 and we're left with 195.
Take the next digit (4) from the dividend and append it to 195, then repeat: 1954 / 225

Advancing to step 7:
When dividing 1954 by 225, we get 8 with a remainder of 154.
The next digit of our result is 8. 
Result so far: 31298.0
The remainder is 154 after subtracting 1800 from 1954.
Grab the next digit (9) from the dividend, add it to 154, then carry on: 1549 / 225

Going ahead to step 8:
225 goes into 1549 6 times with a remainder of 199.
Use 6 as the next digit of our solution. 
Result so far: 312986.0
Subtract 1350 from 1549 to get 199.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1990, and continue the process.

Advancing to step 9:
When dividing 1990 by 225, we get 8 with a remainder of 190.
Put 8 as the next digit of the answer. 
Result so far: 312986.8
If we take 1800 away from 1990, we end up with 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Going ahead to step 10:
When dividing 1900 by 225, we get 8 with a remainder of 100.
Use 8 as the next digit of our solution. 
Result so far: 312986.88
The remainder is 100 after subtracting 1800 from 1900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Our division results in 312986.88 with a remaining 0.1.