Let's divide 18741986 by 390
We're looking to find how many times 390 goes into 18741986.

Step 1:
The number 390 fits into 1 0 times, leaving a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 390

Let's proceed to step 2:
390 goes into 18 0 times with a remainder of 18.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 18, we get 18.
Fetch the next digit (7) from the dividend, attach it to 18 and continue: 187 / 390

Let's proceed to step 3:
The number 390 fits into 187 0 times, leaving a remainder of 187.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 187 to get 187.
Take the next digit (4) from the dividend and append it to 187, then repeat: 1874 / 390

Moving on to step 4:
390 can be fit into 1874 4 times, resulting in a remainder of 314.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
If we take 1560 away from 1874, we end up with 314.
Grab the next digit (1) from the dividend, add it to 314, then carry on: 3141 / 390

Advancing to step 5:
390 can be fit into 3141 8 times, resulting in a remainder of 21.
The next digit of our result is 8. 
Result so far: 48.0
Subtracting 3120 from 3141 leaves us with 21.
Take the next digit (9) from the dividend and append it to 21, then repeat: 219 / 390

Step 6:
219 divided by 390 is 0 with a remainder of 219.
The next digit of our result is 0. 
Result so far: 480.0
Subtract 0 from 219 to get 219.
Include the next digit (8) from the dividend after 219, then repeat: 2198 / 390

Step 7:
390 goes into 2198 5 times with a remainder of 248.
The next digit of our result is 5. 
Result so far: 4805.0
If we subtract 1950 from 2198, we get 248.
Take the next digit (6) from the dividend and append it to 248, then repeat: 2486 / 390

Let's proceed to step 8:
390 goes into 2486 6 times with a remainder of 146.
Use 6 as the next digit of our solution. 
Result so far: 48056.0
Subtract 2340 from 2486 to get 146.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1460, and continue the process.

Moving on to step 9:
1460 divided by 390 is 3 with a remainder of 290.
The next digit of our result is 3. 
Result so far: 48056.3
If we subtract 1170 from 1460, we get 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Let's proceed to step 10:
390 goes into 2900 7 times with a remainder of 170.
Use 7 as the next digit of our solution. 
Result so far: 48056.37
Subtract 2730 from 2900 to get 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

On to step 11:
If we divide 1700 by 390, we get 4 and a remainder of 140.
Use 4 as the next digit of our solution. 
Result so far: 48056.374
Subtracting 1560 from 1700 leaves us with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Advancing to step 12:
The number 390 fits into 1400 3 times, leaving a remainder of 230.
The next digit of our result is 3. 
Result so far: 48056.3743
Subtracting 1170 from 1400 leaves us with 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

On to step 13:
If we divide 2300 by 390, we get 5 and a remainder of 350.
The next digit of our result is 5. 
Result so far: 48056.37435
Subtracting 1950 from 2300 leaves us with 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Advancing to step 14:
3500 divided by 390 is 8 with a remainder of 380.
Put 8 as the next digit of the answer. 
Result so far: 48056.374358
If we take 3120 away from 3500, we end up with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Moving on to step 15:
When dividing 3800 by 390, we get 9 with a remainder of 290.
Write down 9 as next digit of the result. 
Result so far: 48056.3743589
If we subtract 3510 from 3800, we get 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

On to step 16:
If we divide 2900 by 390, we get 7 and a remainder of 170.
The next digit of our result is 7. 
Result so far: 48056.37435897
Subtracting 2730 from 2900 leaves us 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.

The final result is 48056.37435897 with a remainder of 1.7e-07.