Let's divide 91169870 by 789
The aim is to understand the frequency of 789 in 91169870.

Step 1:
789 goes into 9 0 times with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Grab the next digit (1) from the dividend, add it to 9, then carry on: 91 / 789

Let's proceed to step 2:
The number 789 fits into 91 0 times, leaving a remainder of 91.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 91, we end up with 91.
Bring next digit (1) of the dividend behind the 91 and repeat the process: 911 / 789

Let's proceed to step 3:
When dividing 911 by 789, we get 1 with a remainder of 122.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 789 from 911 to get 122.
Append the next digit (6) from the dividend to 122 and continue with: 1226 / 789

Advancing to step 4:
The number 789 fits into 1226 1 times, leaving a remainder of 437.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
Deduct 789 from 1226 and we're left with 437.
Grab the next digit (9) from the dividend, add it to 437, then carry on: 4379 / 789

Let's proceed to step 5:
When dividing 4379 by 789, we get 5 with a remainder of 434.
The number 5 becomes the next digit in our result. 
Result so far: 115.0
The remainder is 434 after subtracting 3945 from 4379.
Include the next digit (8) from the dividend after 434, then repeat: 4348 / 789

On to step 6:
The number 789 fits into 4348 5 times, leaving a remainder of 403.
Use 5 as the next digit of our solution. 
Result so far: 1155.0
Subtracting 3945 from 4348 leaves us with 403.
Append the next digit (7) from the dividend to 403 and continue with: 4037 / 789

Step 7:
When dividing 4037 by 789, we get 5 with a remainder of 92.
The number 5 becomes the next digit in our result. 
Result so far: 11555.0
The remainder is 92 after subtracting 3945 from 4037.
Fetch the next digit (0) from the dividend, attach it to 92 and continue: 920 / 789

Going ahead to step 8:
When dividing 920 by 789, we get 1 with a remainder of 131.
The next digit of our result is 1. 
Result so far: 115551.0
The remainder is 131 after subtracting 789 from 920.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1310, and continue the process.

Moving on to step 9:
789 can be fit into 1310 1 times, resulting in a remainder of 521.
Record the quotient 1 as the next digit in the result. 
Result so far: 115551.1
The remainder is 521 after subtracting 789 from 1310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5210, and continue the process.

Let's proceed to step 10:
When dividing 5210 by 789, we get 6 with a remainder of 476.
Record the quotient 6 as the next digit in the result. 
Result so far: 115551.16
Subtract 4734 from 5210 to get 476.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4760, and continue the process.

Step 11:
789 can be fit into 4760 6 times, resulting in a remainder of 26.
The number 6 becomes the next digit in our result. 
Result so far: 115551.166
Subtract 4734 from 4760 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

The final outcome is 115551.166, with a leftover of 0.0026.