We look at the division of 388140 by 73 
We want to figure out the number of times 388140 can be divided by 73.

On to step 1:
73 goes into 3 0 times with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Take the next digit (8) from the dividend and append it to 3, then repeat: 38 / 73

Advancing to step 2:
38 divided by 73 is 0 with a remainder of 38.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 38 to get 38.
Fetch the next digit (8) from the dividend, attach it to 38 and continue: 388 / 73

On to step 3:
73 goes into 388 5 times with a remainder of 23.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Subtracting 365 from 388 leaves us with 23.
Grab the next digit (1) from the dividend, add it to 23, then carry on: 231 / 73

Step 4:
73 goes into 231 3 times with a remainder of 12.
The number 3 becomes the next digit in our result. 
Result so far: 53.0
If we take 219 away from 231, we end up with 12.
Fetch the next digit (4) from the dividend, attach it to 12 and continue: 124 / 73

Step 5:
If we divide 124 by 73, we get 1 and a remainder of 51.
Use 1 as the next digit of our solution. 
Result so far: 531.0
The remainder is 51 after subtracting 73 from 124.
Include the next digit (0) from the dividend after 51, then repeat: 510 / 73

On to step 6:
If we divide 510 by 73, we get 6 and a remainder of 72.
Record the quotient 6 as the next digit in the result. 
Result so far: 5316.0
Subtracting 438 from 510 leaves us with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Going ahead to step 7:
73 goes into 720 9 times with a remainder of 63.
The number 9 becomes the next digit in our result. 
Result so far: 5316.9
If we subtract 657 from 720, we get 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

On to step 8:
630 divided by 73 is 8 with a remainder of 46.
Record the quotient 8 as the next digit in the result. 
Result so far: 5316.98
Subtracting 584 from 630 leaves us with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 9:
If we divide 460 by 73, we get 6 and a remainder of 22.
Write down 6 as next digit of the result. 
Result so far: 5316.986
The remainder is 22 after subtracting 438 from 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 10:
If we divide 220 by 73, we get 3 and a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 5316.9863
Subtract 219 from 220 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 11:
When dividing 10 by 73, we get 0 with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 5316.9863
If we subtract 0 from 10, we get 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 12:
The number 73 fits into 100 1 times, leaving a remainder of 27.
The next digit of our result is 1. 
Result so far: 5316.986301
Deduct 73 from 100 and we're left with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Going ahead to step 13:
When dividing 270 by 73, we get 3 with a remainder of 51.
Write down 3 as next digit of the result. 
Result so far: 5316.9863013
Deduct 219 from 270 and we're left with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Step 14:
73 can be fit into 510 6 times, resulting in a remainder of 72.
The next digit of our result is 6. 
Result so far: 5316.98630136
Subtracting 438 from 510 leaves us with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

After the division, we end up with 5316.98630136 and a remainder of 7.2e-08.