In a vegetable field, (1/16) grows spinach, (3/16) grows rapeseed, (5/16) grows cabbage, and the rest grows green vegetables. How much?
一块菜地，其中的(1/16)种菠菜，(3/16)种油菜，(5/16)种白菜，剩下的种青菜，青菜和菠菜种植的面积共占这块地的几分之几？
<gadget id="calculator">3 / 16</gadget>
<output>3/16 = around 0.1875</output>

<gadget id="calculator">5 / 16</gadget>
<output>5/16 = around 0.3125</output>

<gadget id="calculator">1 - (3/16) - (5/16)</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>