During Children's Day, my mother took Xiaoxiao to the stationery store to buy a school bag (42 yuan) and a stationery box (18 yuan).
妈妈"六一"儿童节时，带笑笑到文具店买书包(42元)和文具盒(18元)，文具店打九折出售，买这两样学习用品，比原价一共少用多少元？
<gadget id="calculator">42 + 18</gadget>
<output>60</output>

<gadget id="calculator">90 / 100</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">1 - (9/10)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">60 * (1/10)</gadget>
<output>6</output>

<result>6</result>