3 3/3 × 13 1/2

=54

We can transform 3 3/3 into 3+1 because 3/3=1. Thus, it becomes 4.

To make it easier, we'll also transform 13 1/2 into an improper fraction which is 27/2.

So, the equation is 4/1× 27/2.

4/1×27/2= 54

Thus, there are 54 tablespoons of melted butter used for 13 1/2 kilograms of flour.

40

3 3/3 = 4

4=3 2/2

3 2/2x13 1/2=39 2/2 or 40