Let's divide 81378042 by 387
We want to divide 81378042 by 387.

Let's proceed to step 1:
8 divided by 387 is 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 387

Advancing to step 2:
When dividing 81 by 387, we get 0 with a remainder of 81.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 81 leaves us with 81.
Take the next digit (3) from the dividend and append it to 81, then repeat: 813 / 387

Step 3:
813 divided by 387 is 2 with a remainder of 39.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 774 from 813 leaves us with 39.
Fetch the next digit (7) from the dividend, attach it to 39 and continue: 397 / 387

Going ahead to step 4:
397 divided by 387 is 1 with a remainder of 10.
Put 1 as the next digit of the answer. 
Result so far: 21.0
Deduct 387 from 397 and we're left with 10.
Bring next digit (8) of the dividend behind the 10 and repeat the process: 108 / 387

Step 5:
387 can be fit into 108 0 times, resulting in a remainder of 108.
The number 0 becomes the next digit in our result. 
Result so far: 210.0
If we take 0 away from 108, we end up with 108.
Append the next digit (0) from the dividend to 108 and continue with: 1080 / 387

Let's proceed to step 6:
When dividing 1080 by 387, we get 2 with a remainder of 306.
The number 2 becomes the next digit in our result. 
Result so far: 2102.0
If we take 774 away from 1080, we end up with 306.
Append the next digit (4) from the dividend to 306 and continue with: 3064 / 387

Moving on to step 7:
When dividing 3064 by 387, we get 7 with a remainder of 355.
Use 7 as the next digit of our solution. 
Result so far: 21027.0
Subtract 2709 from 3064 to get 355.
Fetch the next digit (2) from the dividend, attach it to 355 and continue: 3552 / 387

Let's proceed to step 8:
387 can be fit into 3552 9 times, resulting in a remainder of 69.
The number 9 becomes the next digit in our result. 
Result so far: 210279.0
If we subtract 3483 from 3552, we get 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Step 9:
387 can be fit into 690 1 times, resulting in a remainder of 303.
Use 1 as the next digit of our solution. 
Result so far: 210279.1
Subtract 387 from 690 to get 303.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3030, and continue the process.

Let's proceed to step 10:
If we divide 3030 by 387, we get 7 and a remainder of 321.
Put 7 as the next digit of the answer. 
Result so far: 210279.17
Subtracting 2709 from 3030 leaves us with 321.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3210, and continue the process.

On to step 11:
If we divide 3210 by 387, we get 8 and a remainder of 114.
Record the quotient 8 as the next digit in the result. 
Result so far: 210279.178
Deduct 3096 from 3210 and we're left with 114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Advancing to step 12:
387 can be fit into 1140 2 times, resulting in a remainder of 366.
Record the quotient 2 as the next digit in the result. 
Result so far: 210279.1782
Subtracting 774 from 1140 leaves us with 366.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3660, and continue the process.

Going ahead to step 13:
3660 divided by 387 is 9 with a remainder of 177.
Record the quotient 9 as the next digit in the result. 
Result so far: 210279.17829
If we subtract 3483 from 3660, we get 177.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1770, and continue the process.

Step 14:
387 can be fit into 1770 4 times, resulting in a remainder of 222.
Write down 4 as next digit of the result. 
Result so far: 210279.178294
If we subtract 1548 from 1770, we get 222.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2220, and continue the process.

Moving on to step 15:
2220 divided by 387 is 5 with a remainder of 285.
The number 5 becomes the next digit in our result. 
Result so far: 210279.1782945
The remainder is 285 after subtracting 1935 from 2220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2850, and continue the process.

On to step 16:
When dividing 2850 by 387, we get 7 with a remainder of 141.
The number 7 becomes the next digit in our result. 
Result so far: 210279.17829457
If we subtract 2709 from 2850, we get 141.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1410, and continue the process.

The final result is 210279.17829457 with a remainder of 1.41e-07.