We divide 21750208 by 390
The aim is to understand the frequency of 390 in 21750208.

On to step 1:
If we divide 2 by 390, we get 0 and a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 390

Advancing to step 2:
When dividing 21 by 390, we get 0 with a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Fetch the next digit (7) from the dividend, attach it to 21 and continue: 217 / 390

Let's proceed to step 3:
The number 390 fits into 217 0 times, leaving a remainder of 217.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 217 after subtracting 0 from 217.
Grab the next digit (5) from the dividend, add it to 217, then carry on: 2175 / 390

Moving on to step 4:
When dividing 2175 by 390, we get 5 with a remainder of 225.
The next digit of our result is 5. 
Result so far: 5.0
If we subtract 1950 from 2175, we get 225.
Include the next digit (0) from the dividend after 225, then repeat: 2250 / 390

Moving on to step 5:
The number 390 fits into 2250 5 times, leaving a remainder of 300.
Use 5 as the next digit of our solution. 
Result so far: 55.0
Deduct 1950 from 2250 and we're left with 300.
Grab the next digit (2) from the dividend, add it to 300, then carry on: 3002 / 390

Step 6:
390 goes into 3002 7 times with a remainder of 272.
Record the quotient 7 as the next digit in the result. 
Result so far: 557.0
Subtract 2730 from 3002 to get 272.
Append the next digit (0) from the dividend to 272 and continue with: 2720 / 390

On to step 7:
The number 390 fits into 2720 6 times, leaving a remainder of 380.
Write down 6 as next digit of the result. 
Result so far: 5576.0
Subtracting 2340 from 2720 leaves us with 380.
Take the next digit (8) from the dividend and append it to 380, then repeat: 3808 / 390

Going ahead to step 8:
The number 390 fits into 3808 9 times, leaving a remainder of 298.
Record the quotient 9 as the next digit in the result. 
Result so far: 55769.0
The remainder is 298 after subtracting 3510 from 3808.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2980, and continue the process.

Let's proceed to step 9:
390 can be fit into 2980 7 times, resulting in a remainder of 250.
Write down 7 as next digit of the result. 
Result so far: 55769.7
Subtracting 2730 from 2980 leaves us 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 10:
When dividing 2500 by 390, we get 6 with a remainder of 160.
Write down 6 as next digit of the result. 
Result so far: 55769.76
Subtracting 2340 from 2500 leaves us with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Going ahead to step 11:
390 can be fit into 1600 4 times, resulting in a remainder of 40.
Use 4 as the next digit of our solution. 
Result so far: 55769.764
Subtract 1560 from 1600 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 12:
When dividing 400 by 390, we get 1 with a remainder of 10.
Record the quotient 1 as the next digit in the result. 
Result so far: 55769.7641
Subtracting 390 from 400 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 13:
The number 390 fits into 100 0 times, leaving a remainder of 100.
The number 0 becomes the next digit in our result. 
Result so far: 55769.7641
Subtracting 0 from 100 leaves us with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Step 14:
When dividing 1000 by 390, we get 2 with a remainder of 220.
Use 2 as the next digit of our solution. 
Result so far: 55769.764102
If we take 780 away from 1000, we end up with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

On to step 15:
390 can be fit into 2200 5 times, resulting in a remainder of 250.
The next digit of our result is 5. 
Result so far: 55769.7641025
If we subtract 1950 from 2200, we get 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Moving on to step 16:
2500 divided by 390 is 6 with a remainder of 160.
The next digit of our result is 6. 
Result so far: 55769.76410256
If we subtract 2340 from 2500, we get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Our division results in 55769.76410256 with a remaining 1.6e-07.