We're dividing 88603002 by 390 
The aim is to understand the frequency of 390 in 88603002.

Step 1:
390 goes into 8 0 times with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Fetch the next digit (8) from the dividend, attach it to 8 and continue: 88 / 390

Going ahead to step 2:
88 divided by 390 is 0 with a remainder of 88.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 88 after subtracting 0 from 88.
Take the next digit (6) from the dividend and append it to 88, then repeat: 886 / 390

Going ahead to step 3:
886 divided by 390 is 2 with a remainder of 106.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtract 780 from 886 to get 106.
Take the next digit (0) from the dividend and append it to 106, then repeat: 1060 / 390

Advancing to step 4:
When dividing 1060 by 390, we get 2 with a remainder of 280.
The number 2 becomes the next digit in our result. 
Result so far: 22.0
Deduct 780 from 1060 and we're left with 280.
Append the next digit (3) from the dividend to 280 and continue with: 2803 / 390

Advancing to step 5:
2803 divided by 390 is 7 with a remainder of 73.
Use 7 as the next digit of our solution. 
Result so far: 227.0
If we take 2730 away from 2803, we end up with 73.
Take the next digit (0) from the dividend and append it to 73, then repeat: 730 / 390

Let's proceed to step 6:
When dividing 730 by 390, we get 1 with a remainder of 340.
Put 1 as the next digit of the answer. 
Result so far: 2271.0
Subtract 390 from 730 to get 340.
Include the next digit (0) from the dividend after 340, then repeat: 3400 / 390

Going ahead to step 7:
When dividing 3400 by 390, we get 8 with a remainder of 280.
The number 8 becomes the next digit in our result. 
Result so far: 22718.0
If we subtract 3120 from 3400, we get 280.
Take the next digit (2) from the dividend and append it to 280, then repeat: 2802 / 390

Step 8:
The number 390 fits into 2802 7 times, leaving a remainder of 72.
Put 7 as the next digit of the answer. 
Result so far: 227187.0
The remainder is 72 after subtracting 2730 from 2802.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

On to step 9:
When dividing 720 by 390, we get 1 with a remainder of 330.
The number 1 becomes the next digit in our result. 
Result so far: 227187.1
Subtract 390 from 720 to get 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

Step 10:
If we divide 3300 by 390, we get 8 and a remainder of 180.
The number 8 becomes the next digit in our result. 
Result so far: 227187.18
Subtracting 3120 from 3300 leaves us with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Let's proceed to step 11:
If we divide 1800 by 390, we get 4 and a remainder of 240.
The next digit of our result is 4. 
Result so far: 227187.184
Subtracting 1560 from 1800 leaves us with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Moving on to step 12:
390 can be fit into 2400 6 times, resulting in a remainder of 60.
Write down 6 as next digit of the result. 
Result so far: 227187.1846
Deduct 2340 from 2400 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 13:
390 can be fit into 600 1 times, resulting in a remainder of 210.
Use 1 as the next digit of our solution. 
Result so far: 227187.18461
If we take 390 away from 600, we end up with 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Moving on to step 14:
The number 390 fits into 2100 5 times, leaving a remainder of 150.
Put 5 as the next digit of the answer. 
Result so far: 227187.184615
Deduct 1950 from 2100 and we're left with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

On to step 15:
390 goes into 1500 3 times with a remainder of 330.
Put 3 as the next digit of the answer. 
Result so far: 227187.1846153
Deduct 1170 from 1500 and we're left with 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

Going ahead to step 16:
390 goes into 3300 8 times with a remainder of 180.
The next digit of our result is 8. 
Result so far: 227187.18461538
Subtracting 3120 from 3300 leaves us with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

The final outcome is 227187.18461538, with a leftover of 1.8e-07.