3870840 divided by 284 
We want to divide 3870840 by 284.

Step 1:
If we divide 3 by 284, we get 0 and a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Fetch the next digit (8) from the dividend, attach it to 3 and continue: 38 / 284

Step 2:
If we divide 38 by 284, we get 0 and a remainder of 38.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 38 to get 38.
Take the next digit (7) from the dividend and append it to 38, then repeat: 387 / 284

Going ahead to step 3:
284 can be fit into 387 1 times, resulting in a remainder of 103.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 284 away from 387, we end up with 103.
Take the next digit (0) from the dividend and append it to 103, then repeat: 1030 / 284

Advancing to step 4:
284 can be fit into 1030 3 times, resulting in a remainder of 178.
Put 3 as the next digit of the answer. 
Result so far: 13.0
Deduct 852 from 1030 and we're left with 178.
Grab the next digit (8) from the dividend, add it to 178, then carry on: 1788 / 284

Going ahead to step 5:
284 can be fit into 1788 6 times, resulting in a remainder of 84.
Record the quotient 6 as the next digit in the result. 
Result so far: 136.0
Deduct 1704 from 1788 and we're left with 84.
Bring next digit (4) of the dividend behind the 84 and repeat the process: 844 / 284

Let's proceed to step 6:
844 divided by 284 is 2 with a remainder of 276.
The number 2 becomes the next digit in our result. 
Result so far: 1362.0
Subtract 568 from 844 to get 276.
Bring next digit (0) of the dividend behind the 276 and repeat the process: 2760 / 284

Step 7:
2760 divided by 284 is 9 with a remainder of 204.
Put 9 as the next digit of the answer. 
Result so far: 13629.0
If we take 2556 away from 2760, we end up with 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

Moving on to step 8:
284 goes into 2040 7 times with a remainder of 52.
The next digit of our result is 7. 
Result so far: 13629.7
Subtracting 1988 from 2040 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Step 9:
520 divided by 284 is 1 with a remainder of 236.
The number 1 becomes the next digit in our result. 
Result so far: 13629.71
Subtract 284 from 520 to get 236.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2360, and continue the process.

Moving on to step 10:
If we divide 2360 by 284, we get 8 and a remainder of 88.
Write down 8 as next digit of the result. 
Result so far: 13629.718
Subtracting 2272 from 2360 leaves us with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Step 11:
284 can be fit into 880 3 times, resulting in a remainder of 28.
Use 3 as the next digit of our solution. 
Result so far: 13629.7183
If we take 852 away from 880, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 12:
280 divided by 284 is 0 with a remainder of 280.
Write down 0 as next digit of the result. 
Result so far: 13629.7183
Subtracting 0 from 280 leaves us with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Moving on to step 13:
2800 divided by 284 is 9 with a remainder of 244.
Put 9 as the next digit of the answer. 
Result so far: 13629.718309
Subtract 2556 from 2800 to get 244.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2440, and continue the process.

Step 14:
284 can be fit into 2440 8 times, resulting in a remainder of 168.
Put 8 as the next digit of the answer. 
Result so far: 13629.7183098
Subtract 2272 from 2440 to get 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Moving on to step 15:
284 goes into 1680 5 times with a remainder of 260.
Record the quotient 5 as the next digit in the result. 
Result so far: 13629.71830985
The remainder is 260 after subtracting 1420 from 1680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

The final outcome is 13629.71830985, with a leftover of 2.6e-07.