What is 10⋅(12+15+110)−1?10 \cdot \left(\tfrac{1}{2} + \tfrac{1}{5} + \tfrac{1}{10}\right)^{-1}?10⋅(21+51+101)−1?
333
888
252\frac{25}{2}225
1703\frac{170}{3}3170
170170170