We look at the division of 87798609 by 723 
The aim is to understand the frequency of 723 in 87798609.

Step 1:
8 divided by 723 is 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 723

Moving on to step 2:
723 can be fit into 87 0 times, resulting in a remainder of 87.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 87, we get 87.
Append the next digit (7) from the dividend to 87 and continue with: 877 / 723

Let's proceed to step 3:
877 divided by 723 is 1 with a remainder of 154.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 723 from 877 leaves us with 154.
Grab the next digit (9) from the dividend, add it to 154, then carry on: 1549 / 723

Advancing to step 4:
723 can be fit into 1549 2 times, resulting in a remainder of 103.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
Subtracting 1446 from 1549 leaves us with 103.
Append the next digit (8) from the dividend to 103 and continue with: 1038 / 723

Let's proceed to step 5:
The number 723 fits into 1038 1 times, leaving a remainder of 315.
Put 1 as the next digit of the answer. 
Result so far: 121.0
If we take 723 away from 1038, we end up with 315.
Take the next digit (6) from the dividend and append it to 315, then repeat: 3156 / 723

Advancing to step 6:
The number 723 fits into 3156 4 times, leaving a remainder of 264.
The next digit of our result is 4. 
Result so far: 1214.0
If we subtract 2892 from 3156, we get 264.
Append the next digit (0) from the dividend to 264 and continue with: 2640 / 723

Moving on to step 7:
723 goes into 2640 3 times with a remainder of 471.
Use 3 as the next digit of our solution. 
Result so far: 12143.0
Deduct 2169 from 2640 and we're left with 471.
Take the next digit (9) from the dividend and append it to 471, then repeat: 4719 / 723

Let's proceed to step 8:
723 goes into 4719 6 times with a remainder of 381.
The next digit of our result is 6. 
Result so far: 121436.0
The remainder is 381 after subtracting 4338 from 4719.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3810, and continue the process.

Advancing to step 9:
723 can be fit into 3810 5 times, resulting in a remainder of 195.
The next digit of our result is 5. 
Result so far: 121436.5
If we subtract 3615 from 3810, we get 195.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

Step 10:
1950 divided by 723 is 2 with a remainder of 504.
Put 2 as the next digit of the answer. 
Result so far: 121436.52
Subtracting 1446 from 1950 leaves us with 504.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5040, and continue the process.

Advancing to step 11:
5040 divided by 723 is 6 with a remainder of 702.
The next digit of our result is 6. 
Result so far: 121436.526
Subtracting 4338 from 5040 leaves us with 702.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7020, and continue the process.

Advancing to step 12:
When dividing 7020 by 723, we get 9 with a remainder of 513.
Record the quotient 9 as the next digit in the result. 
Result so far: 121436.5269
If we take 6507 away from 7020, we end up with 513.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5130, and continue the process.

Going ahead to step 13:
If we divide 5130 by 723, we get 7 and a remainder of 69.
Use 7 as the next digit of our solution. 
Result so far: 121436.52697
Subtract 5061 from 5130 to get 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Step 14:
The number 723 fits into 690 0 times, leaving a remainder of 690.
The next digit of our result is 0. 
Result so far: 121436.52697
If we subtract 0 from 690, we get 690.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6900, and continue the process.

Let's proceed to step 15:
723 can be fit into 6900 9 times, resulting in a remainder of 393.
Put 9 as the next digit of the answer. 
Result so far: 121436.5269709
If we take 6507 away from 6900, we end up with 393.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3930, and continue the process.

Let's proceed to step 16:
723 can be fit into 3930 5 times, resulting in a remainder of 315.
Write down 5 as next digit of the result. 
Result so far: 121436.52697095
Subtract 3615 from 3930 to get 315.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3150, and continue the process.

After the division, we end up with 121436.52697095 and a remainder of 3.15e-07.