We're dividing 61091752 by 161 
The aim is to understand the frequency of 161 in 61091752.

Moving on to step 1:
161 goes into 6 0 times with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Fetch the next digit (1) from the dividend, attach it to 6 and continue: 61 / 161

Going ahead to step 2:
When dividing 61 by 161, we get 0 with a remainder of 61.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 61 leaves us with 61.
Bring next digit (0) of the dividend behind the 61 and repeat the process: 610 / 161

Going ahead to step 3:
The number 161 fits into 610 3 times, leaving a remainder of 127.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Deduct 483 from 610 and we're left with 127.
Include the next digit (9) from the dividend after 127, then repeat: 1279 / 161

Moving on to step 4:
161 can be fit into 1279 7 times, resulting in a remainder of 152.
Use 7 as the next digit of our solution. 
Result so far: 37.0
Subtracting 1127 from 1279 leaves us with 152.
Include the next digit (1) from the dividend after 152, then repeat: 1521 / 161

On to step 5:
1521 divided by 161 is 9 with a remainder of 72.
Use 9 as the next digit of our solution. 
Result so far: 379.0
If we take 1449 away from 1521, we end up with 72.
Bring next digit (7) of the dividend behind the 72 and repeat the process: 727 / 161

Step 6:
When dividing 727 by 161, we get 4 with a remainder of 83.
Record the quotient 4 as the next digit in the result. 
Result so far: 3794.0
Subtract 644 from 727 to get 83.
Append the next digit (5) from the dividend to 83 and continue with: 835 / 161

Going ahead to step 7:
161 goes into 835 5 times with a remainder of 30.
Record the quotient 5 as the next digit in the result. 
Result so far: 37945.0
Deduct 805 from 835 and we're left with 30.
Bring next digit (2) of the dividend behind the 30 and repeat the process: 302 / 161

Step 8:
When dividing 302 by 161, we get 1 with a remainder of 141.
Write down 1 as next digit of the result. 
Result so far: 379451.0
Subtract 161 from 302 to get 141.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1410, and continue the process.

Let's proceed to step 9:
161 can be fit into 1410 8 times, resulting in a remainder of 122.
The next digit of our result is 8. 
Result so far: 379451.8
The remainder is 122 after subtracting 1288 from 1410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

Going ahead to step 10:
161 goes into 1220 7 times with a remainder of 93.
Write down 7 as next digit of the result. 
Result so far: 379451.87
Deduct 1127 from 1220 and we're left with 93.
Since there are no more digits in the dividend, we add a zero to the remainder making it 930, and continue the process.

Moving on to step 11:
When dividing 930 by 161, we get 5 with a remainder of 125.
Put 5 as the next digit of the answer. 
Result so far: 379451.875
Subtracting 805 from 930 leaves us with 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Step 12:
1250 divided by 161 is 7 with a remainder of 123.
Record the quotient 7 as the next digit in the result. 
Result so far: 379451.8757
The remainder is 123 after subtracting 1127 from 1250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1230, and continue the process.

Going ahead to step 13:
If we divide 1230 by 161, we get 7 and a remainder of 103.
The next digit of our result is 7. 
Result so far: 379451.87577
Subtracting 1127 from 1230 leaves us with 103.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1030, and continue the process.

The final outcome is 379451.87577, with a leftover of 0.000103.