73680846 ÷ 390 
We want to figure out the number of times 73680846 can be divided by 390.

Let's proceed to step 1:
When dividing 7 by 390, we get 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Include the next digit (3) from the dividend after 7, then repeat: 73 / 390

On to step 2:
The number 390 fits into 73 0 times, leaving a remainder of 73.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 73 and we're left with 73.
Fetch the next digit (6) from the dividend, attach it to 73 and continue: 736 / 390

Moving on to step 3:
736 divided by 390 is 1 with a remainder of 346.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 346 after subtracting 390 from 736.
Take the next digit (8) from the dividend and append it to 346, then repeat: 3468 / 390

Advancing to step 4:
When dividing 3468 by 390, we get 8 with a remainder of 348.
The number 8 becomes the next digit in our result. 
Result so far: 18.0
The remainder is 348 after subtracting 3120 from 3468.
Append the next digit (0) from the dividend to 348 and continue with: 3480 / 390

On to step 5:
3480 divided by 390 is 8 with a remainder of 360.
The number 8 becomes the next digit in our result. 
Result so far: 188.0
The remainder is 360 after subtracting 3120 from 3480.
Take the next digit (8) from the dividend and append it to 360, then repeat: 3608 / 390

Let's proceed to step 6:
390 can be fit into 3608 9 times, resulting in a remainder of 98.
Use 9 as the next digit of our solution. 
Result so far: 1889.0
Deduct 3510 from 3608 and we're left with 98.
Grab the next digit (4) from the dividend, add it to 98, then carry on: 984 / 390

Step 7:
If we divide 984 by 390, we get 2 and a remainder of 204.
Write down 2 as next digit of the result. 
Result so far: 18892.0
If we subtract 780 from 984, we get 204.
Take the next digit (6) from the dividend and append it to 204, then repeat: 2046 / 390

Moving on to step 8:
2046 divided by 390 is 5 with a remainder of 96.
The next digit of our result is 5. 
Result so far: 188925.0
If we take 1950 away from 2046, we end up with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Advancing to step 9:
The number 390 fits into 960 2 times, leaving a remainder of 180.
Write down 2 as next digit of the result. 
Result so far: 188925.2
The remainder is 180 after subtracting 780 from 960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Step 10:
1800 divided by 390 is 4 with a remainder of 240.
Write down 4 as next digit of the result. 
Result so far: 188925.24
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.

Step 11:
When dividing 2400 by 390, we get 6 with a remainder of 60.
Put 6 as the next digit of the answer. 
Result so far: 188925.246
The remainder is 60 after subtracting 2340 from 2400.
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 12:
If we divide 600 by 390, we get 1 and a remainder of 210.
Use 1 as the next digit of our solution. 
Result so far: 188925.2461
If we subtract 390 from 600, we get 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Step 13:
If we divide 2100 by 390, we get 5 and a remainder of 150.
Put 5 as the next digit of the answer. 
Result so far: 188925.24615
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.

Advancing to step 14:
If we divide 1500 by 390, we get 3 and a remainder of 330.
Write down 3 as next digit of the result. 
Result so far: 188925.246153
The remainder is 330 after subtracting 1170 from 1500.
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 15:
390 goes into 3300 8 times with a remainder of 180.
The number 8 becomes the next digit in our result. 
Result so far: 188925.2461538
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.

Advancing to step 16:
1800 divided by 390 is 4 with a remainder of 240.
Use 4 as the next digit of our solution. 
Result so far: 188925.24615384
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.

The final outcome is 188925.24615384, with a leftover of 2.4e-07.