Let's divide 51013151 by 3
Let's see how many times 3 fits into 51013151.

On to step 1:
5 divided by 3 is 1 with a remainder of 2.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 3 from 5 and we're left with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 3

Going ahead to step 2:
21 divided by 3 is 7 with a remainder of 0.
Use 7 as the next digit of our solution. 
Result so far: 17.0
Subtract 21 from 21 to get 0.
Grab the next digit (0) from the dividend, add it to 0, then carry on: 0 / 3

Step 3:
If we divide 0 by 3, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 170.0
Subtracting 0 from 0 leaves us with 0.
Fetch the next digit (1) from the dividend, attach it to 0 and continue: 1 / 3

Let's proceed to step 4:
When dividing 1 by 3, we get 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 1700.0
Subtracting 0 from 1 leaves us with 1.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 3

Advancing to step 5:
When dividing 13 by 3, we get 4 with a remainder of 1.
Record the quotient 4 as the next digit in the result. 
Result so far: 17004.0
If we subtract 12 from 13, we get 1.
Grab the next digit (1) from the dividend, add it to 1, then carry on: 11 / 3

On to step 6:
3 goes into 11 3 times with a remainder of 2.
Put 3 as the next digit of the answer. 
Result so far: 170043.0
If we subtract 9 from 11, we get 2.
Grab the next digit (5) from the dividend, add it to 2, then carry on: 25 / 3

Let's proceed to step 7:
3 goes into 25 8 times with a remainder of 1.
The next digit of our result is 8. 
Result so far: 1700438.0
Subtracting 24 from 25 leaves us with 1.
Append the next digit (1) from the dividend to 1 and continue with: 11 / 3

Going ahead to step 8:
3 goes into 11 3 times with a remainder of 2.
Put 3 as the next digit of the answer. 
Result so far: 17004383.0
Subtract 9 from 11 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 9:
The number 3 fits into 20 6 times, leaving a remainder of 2.
The next digit of our result is 6. 
Result so far: 17004383.6
Subtracting 18 from 20 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 10:
3 can be fit into 20 6 times, resulting in a remainder of 2.
The next digit of our result is 6. 
Result so far: 17004383.66
The remainder is 2 after subtracting 18 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

The final outcome is 17004383.66, with a leftover of 0.002.