We're dividing 78169989 by 485 
The aim is to understand the frequency of 485 in 78169989.

On to step 1:
7 divided by 485 is 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 485

On to step 2:
485 goes into 78 0 times with a remainder of 78.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 78 leaves us with 78.
Include the next digit (1) from the dividend after 78, then repeat: 781 / 485

Let's proceed to step 3:
When dividing 781 by 485, we get 1 with a remainder of 296.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 485 from 781 and we're left with 296.
Take the next digit (6) from the dividend and append it to 296, then repeat: 2966 / 485

Going ahead to step 4:
485 goes into 2966 6 times with a remainder of 56.
Record the quotient 6 as the next digit in the result. 
Result so far: 16.0
If we take 2910 away from 2966, we end up with 56.
Take the next digit (9) from the dividend and append it to 56, then repeat: 569 / 485

On to step 5:
The number 485 fits into 569 1 times, leaving a remainder of 84.
Record the quotient 1 as the next digit in the result. 
Result so far: 161.0
If we subtract 485 from 569, we get 84.
Fetch the next digit (9) from the dividend, attach it to 84 and continue: 849 / 485

Step 6:
If we divide 849 by 485, we get 1 and a remainder of 364.
The number 1 becomes the next digit in our result. 
Result so far: 1611.0
Subtracting 485 from 849 leaves us with 364.
Include the next digit (8) from the dividend after 364, then repeat: 3648 / 485

On to step 7:
485 can be fit into 3648 7 times, resulting in a remainder of 253.
Record the quotient 7 as the next digit in the result. 
Result so far: 16117.0
The remainder is 253 after subtracting 3395 from 3648.
Grab the next digit (9) from the dividend, add it to 253, then carry on: 2539 / 485

Going ahead to step 8:
When dividing 2539 by 485, we get 5 with a remainder of 114.
Put 5 as the next digit of the answer. 
Result so far: 161175.0
The remainder is 114 after subtracting 2425 from 2539.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Going ahead to step 9:
485 can be fit into 1140 2 times, resulting in a remainder of 170.
Put 2 as the next digit of the answer. 
Result so far: 161175.2
If we take 970 away from 1140, we end up with 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Let's proceed to step 10:
If we divide 1700 by 485, we get 3 and a remainder of 245.
Put 3 as the next digit of the answer. 
Result so far: 161175.23
Deduct 1455 from 1700 and we're left with 245.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2450, and continue the process.

Going ahead to step 11:
2450 divided by 485 is 5 with a remainder of 25.
Write down 5 as next digit of the result. 
Result so far: 161175.235
Subtract 2425 from 2450 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Step 12:
485 goes into 250 0 times with a remainder of 250.
Write down 0 as next digit of the result. 
Result so far: 161175.235
If we take 0 away from 250, we end up with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Going ahead to step 13:
When dividing 2500 by 485, we get 5 with a remainder of 75.
Put 5 as the next digit of the answer. 
Result so far: 161175.23505
If we subtract 2425 from 2500, we get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Advancing to step 14:
485 can be fit into 750 1 times, resulting in a remainder of 265.
Write down 1 as next digit of the result. 
Result so far: 161175.235051
Deduct 485 from 750 and we're left with 265.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2650, and continue the process.

Step 15:
485 can be fit into 2650 5 times, resulting in a remainder of 225.
Write down 5 as next digit of the result. 
Result so far: 161175.2350515
If we subtract 2425 from 2650, we get 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Advancing to step 16:
If we divide 2250 by 485, we get 4 and a remainder of 310.
Record the quotient 4 as the next digit in the result. 
Result so far: 161175.23505154
If we subtract 1940 from 2250, we get 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

The final result is 161175.23505154 with a remainder of 3.1e-07.