Xiao Ming and his father went to the store and sold a pair of sneakers for 38.5 yuan and a skipping rope for 4.8 yuan. Dad paid 100 yuan to the salesperson's aunt, how much should I get back?
小明和爸爸到商店卖了一双38.5元的运动鞋和一根4.8元的跳绳．爸爸付给售货员阿姨100元，应找回多少元钱？
<gadget id="calculator">100 - 38.5 - 4.8</gadget>
<output>56.7</output>

<result>56.7</result>