We divide 763813 by 3
Let's see how many times 3 fits into 763813.

Advancing to step 1:
The number 3 fits into 7 2 times, leaving a remainder of 1.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 6 from 7 to get 1.
Fetch the next digit (6) from the dividend, attach it to 1 and continue: 16 / 3

On to step 2:
16 divided by 3 is 5 with a remainder of 1.
Record the quotient 5 as the next digit in the result. 
Result so far: 25.0
The remainder is 1 after subtracting 15 from 16.
Take the next digit (3) from the dividend and append it to 1, then repeat: 13 / 3

Going ahead to step 3:
When dividing 13 by 3, we get 4 with a remainder of 1.
Write down 4 as next digit of the result. 
Result so far: 254.0
If we subtract 12 from 13, we get 1.
Include the next digit (8) from the dividend after 1, then repeat: 18 / 3

Going ahead to step 4:
When dividing 18 by 3, we get 6 with a remainder of 0.
Put 6 as the next digit of the answer. 
Result so far: 2546.0
If we subtract 18 from 18, we get 0.
Append the next digit (1) from the dividend to 0 and continue with: 1 / 3

On to step 5:
When dividing 1 by 3, we get 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 25460.0
If we take 0 away from 1, we end up with 1.
Append the next digit (3) from the dividend to 1 and continue with: 13 / 3

Advancing to step 6:
3 goes into 13 4 times with a remainder of 1.
Record the quotient 4 as the next digit in the result. 
Result so far: 254604.0
The remainder is 1 after subtracting 12 from 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 7:
10 divided by 3 is 3 with a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 254604.3
If we subtract 9 from 10, we 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 8:
When dividing 10 by 3, we get 3 with a remainder of 1.
The number 3 becomes the next digit in our result. 
Result so far: 254604.33
If we subtract 9 from 10, we 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.

The final outcome is 254604.33, with a leftover of 0.001.