The production function expressed in the table below represents the number of tacos that can be made at a taco truck in a given day based on the number of workers. Calculate the marginal product of adding the $2$ nd worker.

$\backslash$table$[[$# of Workers,$1,2,3,4,5],[$# of Tacos Produced,$115,245,385,505,600]]$

Provide your answer below:

$$ tacos