3780621 divided by 513 
We want to divide 3780621 by 513.

Let's proceed to step 1:
When dividing 3 by 513, we get 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Fetch the next digit (7) from the dividend, attach it to 3 and continue: 37 / 513

Advancing to step 2:
When dividing 37 by 513, we get 0 with a remainder of 37.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 37, we get 37.
Include the next digit (8) from the dividend after 37, then repeat: 378 / 513

Moving on to step 3:
When dividing 378 by 513, we get 0 with a remainder of 378.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 378, we end up with 378.
Grab the next digit (0) from the dividend, add it to 378, then carry on: 3780 / 513

On to step 4:
513 goes into 3780 7 times with a remainder of 189.
Write down 7 as next digit of the result. 
Result so far: 7.0
Deduct 3591 from 3780 and we're left with 189.
Take the next digit (6) from the dividend and append it to 189, then repeat: 1896 / 513

On to step 5:
The number 513 fits into 1896 3 times, leaving a remainder of 357.
Write down 3 as next digit of the result. 
Result so far: 73.0
If we subtract 1539 from 1896, we get 357.
Bring next digit (2) of the dividend behind the 357 and repeat the process: 3572 / 513

Step 6:
3572 divided by 513 is 6 with a remainder of 494.
Write down 6 as next digit of the result. 
Result so far: 736.0
Subtracting 3078 from 3572 leaves us with 494.
Include the next digit (1) from the dividend after 494, then repeat: 4941 / 513

Step 7:
When dividing 4941 by 513, we get 9 with a remainder of 324.
Record the quotient 9 as the next digit in the result. 
Result so far: 7369.0
If we subtract 4617 from 4941, we get 324.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3240, and continue the process.

Moving on to step 8:
If we divide 3240 by 513, we get 6 and a remainder of 162.
Use 6 as the next digit of our solution. 
Result so far: 7369.6
Subtract 3078 from 3240 to get 162.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1620, and continue the process.

On to step 9:
The number 513 fits into 1620 3 times, leaving a remainder of 81.
Write down 3 as next digit of the result. 
Result so far: 7369.63
If we subtract 1539 from 1620, we get 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Going ahead to step 10:
The number 513 fits into 810 1 times, leaving a remainder of 297.
Put 1 as the next digit of the answer. 
Result so far: 7369.631
Deduct 513 from 810 and we're left with 297.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2970, and continue the process.

Moving on to step 11:
513 goes into 2970 5 times with a remainder of 405.
Use 5 as the next digit of our solution. 
Result so far: 7369.6315
Subtract 2565 from 2970 to get 405.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4050, and continue the process.

On to step 12:
The number 513 fits into 4050 7 times, leaving a remainder of 459.
The next digit of our result is 7. 
Result so far: 7369.63157
If we subtract 3591 from 4050, we get 459.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4590, and continue the process.

Let's proceed to step 13:
513 can be fit into 4590 8 times, resulting in a remainder of 486.
The next digit of our result is 8. 
Result so far: 7369.631578
The remainder is 486 after subtracting 4104 from 4590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4860, and continue the process.

Step 14:
513 goes into 4860 9 times with a remainder of 243.
Use 9 as the next digit of our solution. 
Result so far: 7369.6315789
If we take 4617 away from 4860, we end up with 243.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2430, and continue the process.

On to step 15:
The number 513 fits into 2430 4 times, leaving a remainder of 378.
Write down 4 as next digit of the result. 
Result so far: 7369.63157894
Subtract 2052 from 2430 to get 378.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3780, and continue the process.

After the division, we end up with 7369.63157894 and a remainder of 3.78e-07.