We divide 15879820 by 965
The aim is to understand the frequency of 965 in 15879820.

Let's proceed to step 1:
The number 965 fits into 1 0 times, leaving a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Fetch the next digit (5) from the dividend, attach it to 1 and continue: 15 / 965

Moving on to step 2:
If we divide 15 by 965, we get 0 and a remainder of 15.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 15 to get 15.
Grab the next digit (8) from the dividend, add it to 15, then carry on: 158 / 965

On to step 3:
If we divide 158 by 965, we get 0 and a remainder of 158.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 158 and we're left with 158.
Include the next digit (7) from the dividend after 158, then repeat: 1587 / 965

Advancing to step 4:
1587 divided by 965 is 1 with a remainder of 622.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 965 from 1587, we get 622.
Include the next digit (9) from the dividend after 622, then repeat: 6229 / 965

Moving on to step 5:
The number 965 fits into 6229 6 times, leaving a remainder of 439.
Write down 6 as next digit of the result. 
Result so far: 16.0
Subtract 5790 from 6229 to get 439.
Fetch the next digit (8) from the dividend, attach it to 439 and continue: 4398 / 965

On to step 6:
4398 divided by 965 is 4 with a remainder of 538.
Use 4 as the next digit of our solution. 
Result so far: 164.0
If we subtract 3860 from 4398, we get 538.
Take the next digit (2) from the dividend and append it to 538, then repeat: 5382 / 965

Moving on to step 7:
If we divide 5382 by 965, we get 5 and a remainder of 557.
Record the quotient 5 as the next digit in the result. 
Result so far: 1645.0
If we subtract 4825 from 5382, we get 557.
Take the next digit (0) from the dividend and append it to 557, then repeat: 5570 / 965

On to step 8:
If we divide 5570 by 965, we get 5 and a remainder of 745.
The next digit of our result is 5. 
Result so far: 16455.0
If we take 4825 away from 5570, we end up with 745.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7450, and continue the process.

Let's proceed to step 9:
965 can be fit into 7450 7 times, resulting in a remainder of 695.
The number 7 becomes the next digit in our result. 
Result so far: 16455.7
Deduct 6755 from 7450 and we're left with 695.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6950, and continue the process.

Advancing to step 10:
965 goes into 6950 7 times with a remainder of 195.
Record the quotient 7 as the next digit in the result. 
Result so far: 16455.77
Subtracting 6755 from 6950 leaves us with 195.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

The final outcome is 16455.77, with a leftover of 0.195.