sum of money can buy 12 pieces of commodity A with a unit price of 50 yuan, and each piece of commodity B is 10 yuan more expensive than commodity A. How many items of commodity B can this money buy?
一笔钱可以买单价50元的A商品12件，每件B商品比A商品贵10元．这笔钱可以买多少件B商品？
<gadget id="calculator">50 + 10</gadget>
<output>60</output>

<gadget id="calculator">12 / 60</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">50 * (1/5)</gadget>
<output>10</output>

<result>10</result>