If the price of three books is equal to the price of four notebooks, and it costs 50.6 cents more to buy four books than to buy three notebooks, then how much is the total cost of buying one book and one notebook?
如果三本书的价钱等于四本笔记本的价钱，而买四本书要比三本笔记本多花5角6分，那么买一本书和一本笔记本共需多少元．
<gadget id="calculator">0.56 / 7</gadget>
<output>0.08</output>

<gadget id="calculator">3 * 0.08</gadget>
<output>0.24</output>

<gadget id="calculator">0.56 - 0.24</gadget>
<output>0.32</output>

<gadget id="calculator">0.56 - 0.24 - 0.08</gadget>
<output>0.24</output>

<gadget id="calculator">0.32 + 0.24</gadget>
<output>0.56</output>

<result>0.56</result>