Please solve in detail.

-A company manufacturing toys sold one of its models -model Z for Rs.7 per unit last year, during which time, the company sold 10000 of the model Z toy. The sales price of Rs.7 included Rs.2 for profit after all the costs were accounted for. This year, as a result of the improvement in the total productivity level for the model Z toy, the company was able to reduce the total cost per unit by Re.1. What benefits does this company realize this year