Zhang Hao and Mingming went to the bookstore to buy the same book. Zhang Hao was short of 2 yuan, and Mingming was short of 14 yuan. If they used their money to buy the book together, the money would be just enough. How much would the book cost?
张浩和明明到书店去买同一本书，张浩缺2元，明明缺14元，若用他们的钱合买这本书，钱刚好够，这本书要多少元．
<gadget id="calculator">2 + 14</gadget>
<output>16</output>

<gadget id="calculator">1 - 1</gadget>
<output>0</output>

<gadget id="calculator">1 + 0</gadget>
<output>1</output>

<gadget id="calculator">16 / 1</gadget>
<output>16</output>

<result>16</result>