We look at the division of 771611 by 16 
The aim is to understand the frequency of 16 in 771611.

On to step 1:
16 goes into 7 0 times with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Grab the next digit (7) from the dividend, add it to 7, then carry on: 77 / 16

Advancing to step 2:
77 divided by 16 is 4 with a remainder of 13.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtract 64 from 77 to get 13.
Take the next digit (1) from the dividend and append it to 13, then repeat: 131 / 16

On to step 3:
16 goes into 131 8 times with a remainder of 3.
Use 8 as the next digit of our solution. 
Result so far: 48.0
Deduct 128 from 131 and we're left with 3.
Grab the next digit (6) from the dividend, add it to 3, then carry on: 36 / 16

On to step 4:
When dividing 36 by 16, we get 2 with a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 482.0
Subtract 32 from 36 to get 4.
Take the next digit (1) from the dividend and append it to 4, then repeat: 41 / 16

Moving on to step 5:
The number 16 fits into 41 2 times, leaving a remainder of 9.
Use 2 as the next digit of our solution. 
Result so far: 4822.0
If we take 32 away from 41, we end up with 9.
Take the next digit (1) from the dividend and append it to 9, then repeat: 91 / 16

Advancing to step 6:
16 can be fit into 91 5 times, resulting in a remainder of 11.
Put 5 as the next digit of the answer. 
Result so far: 48225.0
Subtracting 80 from 91 leaves us with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 7:
When dividing 110 by 16, we get 6 with a remainder of 14.
Use 6 as the next digit of our solution. 
Result so far: 48225.6
Subtract 96 from 110 to 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.

On to step 8:
16 goes into 140 8 times with a remainder of 12.
The next digit of our result is 8. 
Result so far: 48225.68
If we take 128 away from 140, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 9:
16 goes into 120 7 times with a remainder of 8.
Use 7 as the next digit of our solution. 
Result so far: 48225.687
Subtracting 112 from 120 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 10:
When dividing 80 by 16, we get 5 with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 48225.6875
If we subtract 80 from 80, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 11:
The number 16 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 48225.6875
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 12:
The number 16 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 48225.6875
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 48225.6875, and the remainder is 0.0.