Let's divide 64721187 by 390
We're looking to find how many times 390 goes into 64721187.

Step 1:
If we divide 6 by 390, we get 0 and a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 390

Step 2:
64 divided by 390 is 0 with a remainder of 64.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 64 leaves us with 64.
Take the next digit (7) from the dividend and append it to 64, then repeat: 647 / 390

Advancing to step 3:
When dividing 647 by 390, we get 1 with a remainder of 257.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 390 from 647, we get 257.
Bring next digit (2) of the dividend behind the 257 and repeat the process: 2572 / 390

Going ahead to step 4:
The number 390 fits into 2572 6 times, leaving a remainder of 232.
Write down 6 as next digit of the result. 
Result so far: 16.0
If we take 2340 away from 2572, we end up with 232.
Take the next digit (1) from the dividend and append it to 232, then repeat: 2321 / 390

Let's proceed to step 5:
390 goes into 2321 5 times with a remainder of 371.
The number 5 becomes the next digit in our result. 
Result so far: 165.0
The remainder is 371 after subtracting 1950 from 2321.
Take the next digit (1) from the dividend and append it to 371, then repeat: 3711 / 390

Advancing to step 6:
3711 divided by 390 is 9 with a remainder of 201.
The next digit of our result is 9. 
Result so far: 1659.0
Deduct 3510 from 3711 and we're left with 201.
Take the next digit (8) from the dividend and append it to 201, then repeat: 2018 / 390

Let's proceed to step 7:
If we divide 2018 by 390, we get 5 and a remainder of 68.
Use 5 as the next digit of our solution. 
Result so far: 16595.0
If we take 1950 away from 2018, we end up with 68.
Grab the next digit (7) from the dividend, add it to 68, then carry on: 687 / 390

Going ahead to step 8:
687 divided by 390 is 1 with a remainder of 297.
Put 1 as the next digit of the answer. 
Result so far: 165951.0
The remainder is 297 after subtracting 390 from 687.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2970, and continue the process.

Let's proceed to step 9:
The number 390 fits into 2970 7 times, leaving a remainder of 240.
Record the quotient 7 as the next digit in the result. 
Result so far: 165951.7
The remainder is 240 after subtracting 2730 from 2970.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Advancing to step 10:
2400 divided by 390 is 6 with a remainder of 60.
Write down 6 as next digit of the result. 
Result so far: 165951.76
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.

Moving on to step 11:
If we divide 600 by 390, we get 1 and a remainder of 210.
Record the quotient 1 as the next digit in the result. 
Result so far: 165951.761
The remainder is 210 after subtracting 390 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

On to step 12:
390 goes into 2100 5 times with a remainder of 150.
The next digit of our result is 5. 
Result so far: 165951.7615
Subtracting 1950 from 2100 leaves us 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 13:
1500 divided by 390 is 3 with a remainder of 330.
Put 3 as the next digit of the answer. 
Result so far: 165951.76153
If we take 1170 away from 1500, we end up 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.

Moving on to step 14:
3300 divided by 390 is 8 with a remainder of 180.
Record the quotient 8 as the next digit in the result. 
Result so far: 165951.761538
The remainder is 180 after subtracting 3120 from 3300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Step 15:
390 can be fit into 1800 4 times, resulting in a remainder of 240.
Use 4 as the next digit of our solution. 
Result so far: 165951.7615384
If we take 1560 away from 1800, we end up 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.

On to step 16:
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: 165951.76153846
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.

The quotient of the division is 165951.76153846, and the remainder is 6e-08.