Let's divide 1616845 by 161
The aim is to understand the frequency of 161 in 1616845.

Step 1:
161 can be fit into 1 0 times, resulting in a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 161

Step 2:
16 divided by 161 is 0 with a remainder of 16.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 16 to get 16.
Fetch the next digit (1) from the dividend, attach it to 16 and continue: 161 / 161

Moving on to step 3:
161 goes into 161 1 times with a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 0 after subtracting 161 from 161.
Bring next digit (6) of the dividend behind the 0 and repeat the process: 6 / 161

Going ahead to step 4:
161 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: 10.0
If we subtract 0 from 6, we get 6.
Take the next digit (8) from the dividend and append it to 6, then repeat: 68 / 161

Moving on to step 5:
161 can be fit into 68 0 times, resulting in a remainder of 68.
Put 0 as the next digit of the answer. 
Result so far: 100.0
Subtracting 0 from 68 leaves us with 68.
Append the next digit (4) from the dividend to 68 and continue with: 684 / 161

Moving on to step 6:
If we divide 684 by 161, we get 4 and a remainder of 40.
The next digit of our result is 4. 
Result so far: 1004.0
Subtract 644 from 684 to get 40.
Take the next digit (5) from the dividend and append it to 40, then repeat: 405 / 161

Let's proceed to step 7:
405 divided by 161 is 2 with a remainder of 83.
The next digit of our result is 2. 
Result so far: 10042.0
Deduct 322 from 405 and we're left with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Let's proceed to step 8:
161 can be fit into 830 5 times, resulting in a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 10042.5
Subtract 805 from 830 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Moving on to step 9:
The number 161 fits into 250 1 times, leaving a remainder of 89.
Use 1 as the next digit of our solution. 
Result so far: 10042.51
The remainder is 89 after subtracting 161 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

Step 10:
If we divide 890 by 161, we get 5 and a remainder of 85.
Write down 5 as next digit of the result. 
Result so far: 10042.515
If we subtract 805 from 890, we get 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Advancing to step 11:
When dividing 850 by 161, we get 5 with a remainder of 45.
Use 5 as the next digit of our solution. 
Result so far: 10042.5155
Subtracting 805 from 850 leaves us with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

The quotient of the division is 10042.5155, and the remainder is 0.00045.