851604 divided by 73 
The aim is to understand the frequency of 73 in 851604.

Advancing to step 1:
When dividing 8 by 73, we get 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Grab the next digit (5) from the dividend, add it to 8, then carry on: 85 / 73

Moving on to step 2:
If we divide 85 by 73, we get 1 and a remainder of 12.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 12 after subtracting 73 from 85.
Take the next digit (1) from the dividend and append it to 12, then repeat: 121 / 73

Advancing to step 3:
When dividing 121 by 73, we get 1 with a remainder of 48.
Use 1 as the next digit of our solution. 
Result so far: 11.0
Deduct 73 from 121 and we're left with 48.
Append the next digit (6) from the dividend to 48 and continue with: 486 / 73

Going ahead to step 4:
The number 73 fits into 486 6 times, leaving a remainder of 48.
Put 6 as the next digit of the answer. 
Result so far: 116.0
If we subtract 438 from 486, we get 48.
Take the next digit (0) from the dividend and append it to 48, then repeat: 480 / 73

Step 5:
If we divide 480 by 73, we get 6 and a remainder of 42.
Write down 6 as next digit of the result. 
Result so far: 1166.0
Subtract 438 from 480 to get 42.
Fetch the next digit (4) from the dividend, attach it to 42 and continue: 424 / 73

Moving on to step 6:
424 divided by 73 is 5 with a remainder of 59.
Record the quotient 5 as the next digit in the result. 
Result so far: 11665.0
The remainder is 59 after subtracting 365 from 424.
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 7:
If we divide 590 by 73, we get 8 and a remainder of 6.
Use 8 as the next digit of our solution. 
Result so far: 11665.8
Subtract 584 from 590 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 8:
60 divided by 73 is 0 with a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 11665.8
Subtracting 0 from 60 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 9:
When dividing 600 by 73, we get 8 with a remainder of 16.
Use 8 as the next digit of our solution. 
Result so far: 11665.808
If we take 584 away from 600, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 10:
160 divided by 73 is 2 with a remainder of 14.
The next digit of our result is 2. 
Result so far: 11665.8082
If we subtract 146 from 160, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 11:
The number 73 fits into 140 1 times, leaving a remainder of 67.
Record the quotient 1 as the next digit in the result. 
Result so far: 11665.80821
The remainder is 67 after subtracting 73 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Moving on to step 12:
73 goes into 670 9 times with a remainder of 13.
Use 9 as the next digit of our solution. 
Result so far: 11665.808219
Deduct 657 from 670 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 13:
73 goes into 130 1 times with a remainder of 57.
The number 1 becomes the next digit in our result. 
Result so far: 11665.8082191
Subtracting 73 from 130 leaves us with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Advancing to step 14:
If we divide 570 by 73, we get 7 and a remainder of 59.
The number 7 becomes the next digit in our result. 
Result so far: 11665.80821917
Subtract 511 from 570 to get 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

The final outcome is 11665.80821917, with a leftover of 5.9e-08.