During the New Year's Day, a shopping mall bought a batch of schoolbags with a cost price of 50 yuan, and the planned profit rate reached 80%. What should be the price?
元旦期间，某商场进了一批成本价为50元的书包，计划盈利率达到80%，应标价多少？
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 + (4/5)</gadget>
<output>9/5 = around 1.8</output>

<gadget id="calculator">50 * (9/5)</gadget>
<output>90</output>

<result>90</result>