The price of a pencil case is 8.5 yuan, and the price of a schoolbag is 1.5 yuan less than 7 times that of a pencil box. How much is the price of a schoolbag?
一只文具盒售价8.5元，一只书包的售价比文具盒的7倍少1.5元，一只书包售价多少元？
<gadget id="calculator">8.5 * 7</gadget>
<output>59.5</output>

<gadget id="calculator">59.5 - 1.5</gadget>
<output>58</output>

<result>58</result>