Wang Hua bought 5 copies of "Fun Mathematics" and "The King of Stories" each, for a total of 20 yuan. Each copy of "Fun Math" is 2.6 yuan, how much is each copy of "Story King"?
王华买《趣味数学》和《故事大王》各5本，一共用了20元．每本《趣味数学》2.6元，每本《故事大王》多少元？
<gadget id="calculator">20 / 5</gadget>
<output>4</output>

<gadget id="calculator">4 - 2.6</gadget>
<output>1.4</output>

<result>1.4</result>