1622337 divided by 390 
The aim is to understand the frequency of 390 in 1622337.

Let's proceed to step 1:
When dividing 1 by 390, we get 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Include the next digit (6) from the dividend after 1, then repeat: 16 / 390

Let's proceed to step 2:
16 divided by 390 is 0 with a remainder of 16.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 16, we get 16.
Append the next digit (2) from the dividend to 16 and continue with: 162 / 390

Let's proceed to step 3:
When dividing 162 by 390, we get 0 with a remainder of 162.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 162 leaves us with 162.
Bring next digit (2) of the dividend behind the 162 and repeat the process: 1622 / 390

Moving on to step 4:
The number 390 fits into 1622 4 times, leaving a remainder of 62.
The next digit of our result is 4. 
Result so far: 4.0
Subtracting 1560 from 1622 leaves us with 62.
Include the next digit (3) from the dividend after 62, then repeat: 623 / 390

Step 5:
390 goes into 623 1 times with a remainder of 233.
The next digit of our result is 1. 
Result so far: 41.0
Subtracting 390 from 623 leaves us with 233.
Bring next digit (3) of the dividend behind the 233 and repeat the process: 2333 / 390

Let's proceed to step 6:
2333 divided by 390 is 5 with a remainder of 383.
Use 5 as the next digit of our solution. 
Result so far: 415.0
The remainder is 383 after subtracting 1950 from 2333.
Grab the next digit (7) from the dividend, add it to 383, then carry on: 3837 / 390

Advancing to step 7:
If we divide 3837 by 390, we get 9 and a remainder of 327.
The number 9 becomes the next digit in our result. 
Result so far: 4159.0
Deduct 3510 from 3837 and we're left with 327.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3270, and continue the process.

Moving on to step 8:
When dividing 3270 by 390, we get 8 with a remainder of 150.
The next digit of our result is 8. 
Result so far: 4159.8
If we take 3120 away from 3270, we end up 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.

Advancing to step 9:
390 goes into 1500 3 times with a remainder of 330.
Use 3 as the next digit of our solution. 
Result so far: 4159.83
Subtract 1170 from 1500 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:
390 goes into 3300 8 times with a remainder of 180.
Record the quotient 8 as the next digit in the result. 
Result so far: 4159.838
Subtract 3120 from 3300 to get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Step 11:
1800 divided by 390 is 4 with a remainder of 240.
The number 4 becomes the next digit in our result. 
Result so far: 4159.8384
The remainder is 240 after subtracting 1560 from 1800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

On to step 12:
390 can be fit into 2400 6 times, resulting in a remainder of 60.
Put 6 as the next digit of the answer. 
Result so far: 4159.83846
Subtract 2340 from 2400 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 13:
600 divided by 390 is 1 with a remainder of 210.
Use 1 as the next digit of our solution. 
Result so far: 4159.838461
Deduct 390 from 600 and we're left 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.

Advancing to step 14:
390 goes into 2100 5 times with a remainder of 150.
Record the quotient 5 as the next digit in the result. 
Result so far: 4159.8384615
Subtract 1950 from 2100 to get 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:
1500 divided by 390 is 3 with a remainder of 330.
The next digit of our result is 3. 
Result so far: 4159.83846153
Subtracting 1170 from 1500 leaves us 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.

The final result is 4159.83846153 with a remainder of 3.3e-07.