We're dividing 7004525 by 161 
The aim is to understand the frequency of 161 in 7004525.

Let's proceed to step 1:
161 goes into 7 0 times with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Take the next digit (0) from the dividend and append it to 7, then repeat: 70 / 161

Going ahead to step 2:
The number 161 fits into 70 0 times, leaving a remainder of 70.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 70 leaves us with 70.
Append the next digit (0) from the dividend to 70 and continue with: 700 / 161

Let's proceed to step 3:
161 goes into 700 4 times with a remainder of 56.
The next digit of our result is 4. 
Result so far: 4.0
The remainder is 56 after subtracting 644 from 700.
Include the next digit (4) from the dividend after 56, then repeat: 564 / 161

Going ahead to step 4:
161 can be fit into 564 3 times, resulting in a remainder of 81.
Put 3 as the next digit of the answer. 
Result so far: 43.0
Subtracting 483 from 564 leaves us with 81.
Bring next digit (5) of the dividend behind the 81 and repeat the process: 815 / 161

Moving on to step 5:
161 goes into 815 5 times with a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 435.0
If we subtract 805 from 815, we get 10.
Append the next digit (2) from the dividend to 10 and continue with: 102 / 161

Step 6:
If we divide 102 by 161, we get 0 and a remainder of 102.
Use 0 as the next digit of our solution. 
Result so far: 4350.0
Subtract 0 from 102 to get 102.
Grab the next digit (5) from the dividend, add it to 102, then carry on: 1025 / 161

Step 7:
161 can be fit into 1025 6 times, resulting in a remainder of 59.
The next digit of our result is 6. 
Result so far: 43506.0
The remainder is 59 after subtracting 966 from 1025.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Moving on to step 8:
161 can be fit into 590 3 times, resulting in a remainder of 107.
Use 3 as the next digit of our solution. 
Result so far: 43506.3
Deduct 483 from 590 and we're left with 107.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1070, and continue the process.

Going ahead to step 9:
161 can be fit into 1070 6 times, resulting in a remainder of 104.
Write down 6 as next digit of the result. 
Result so far: 43506.36
Subtracting 966 from 1070 leaves us with 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

Step 10:
161 goes into 1040 6 times with a remainder of 74.
Record the quotient 6 as the next digit in the result. 
Result so far: 43506.366
Subtracting 966 from 1040 leaves us with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

The quotient of the division is 43506.366, and the remainder is 0.0074.