We divide 66648473 by 161
The aim is to understand the frequency of 161 in 66648473.

Moving on to step 1:
6 divided by 161 is 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 161

Going ahead to step 2:
161 can be fit into 66 0 times, resulting in a remainder of 66.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 66, we end up with 66.
Include the next digit (6) from the dividend after 66, then repeat: 666 / 161

Let's proceed to step 3:
If we divide 666 by 161, we get 4 and a remainder of 22.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Deduct 644 from 666 and we're left with 22.
Append the next digit (4) from the dividend to 22 and continue with: 224 / 161

On to step 4:
The number 161 fits into 224 1 times, leaving a remainder of 63.
The next digit of our result is 1. 
Result so far: 41.0
Deduct 161 from 224 and we're left with 63.
Include the next digit (8) from the dividend after 63, then repeat: 638 / 161

Moving on to step 5:
When dividing 638 by 161, we get 3 with a remainder of 155.
Use 3 as the next digit of our solution. 
Result so far: 413.0
Deduct 483 from 638 and we're left with 155.
Include the next digit (4) from the dividend after 155, then repeat: 1554 / 161

Moving on to step 6:
161 can be fit into 1554 9 times, resulting in a remainder of 105.
The number 9 becomes the next digit in our result. 
Result so far: 4139.0
If we subtract 1449 from 1554, we get 105.
Fetch the next digit (7) from the dividend, attach it to 105 and continue: 1057 / 161

Moving on to step 7:
161 can be fit into 1057 6 times, resulting in a remainder of 91.
The next digit of our result is 6. 
Result so far: 41396.0
Subtract 966 from 1057 to get 91.
Append the next digit (3) from the dividend to 91 and continue with: 913 / 161

Advancing to step 8:
If we divide 913 by 161, we get 5 and a remainder of 108.
The next digit of our result is 5. 
Result so far: 413965.0
Subtract 805 from 913 to get 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

Moving on to step 9:
161 can be fit into 1080 6 times, resulting in a remainder of 114.
The next digit of our result is 6. 
Result so far: 413965.6
If we take 966 away from 1080, we end up with 114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

On to step 10:
If we divide 1140 by 161, we get 7 and a remainder of 13.
Put 7 as the next digit of the answer. 
Result so far: 413965.67
Subtract 1127 from 1140 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

On to step 11:
If we divide 130 by 161, we get 0 and a remainder of 130.
Record the quotient 0 as the next digit in the result. 
Result so far: 413965.67
If we take 0 away from 130, we end up with 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Moving on to step 12:
1300 divided by 161 is 8 with a remainder of 12.
The next digit of our result is 8. 
Result so far: 413965.6708
Subtract 1288 from 1300 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 13:
If we divide 120 by 161, we get 0 and a remainder of 120.
The next digit of our result is 0. 
Result so far: 413965.6708
Deduct 0 from 120 and we're left with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Let's proceed to step 14:
161 goes into 1200 7 times with a remainder of 73.
The number 7 becomes the next digit in our result. 
Result so far: 413965.670807
If we subtract 1127 from 1200, we get 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Let's proceed to step 15:
The number 161 fits into 730 4 times, leaving a remainder of 86.
The number 4 becomes the next digit in our result. 
Result so far: 413965.6708074
The remainder is 86 after subtracting 644 from 730.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Going ahead to step 16:
860 divided by 161 is 5 with a remainder of 55.
Write down 5 as next digit of the result. 
Result so far: 413965.67080745
Deduct 805 from 860 and we're left with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

The final result is 413965.67080745 with a remainder of 5.5e-08.