Xiao Ming bought a copy of "Grimm's Fairy Tales" for 24 yuan, and read 56 pages in the first week. According to this calculation, how many days can Xiao Ming finish reading this 160-page book?
小明用24元钱买了一本《格林童话》，第一周看了56页．照这样计算，这本160页得书，小明多少天能看完？
<gadget id="calculator">56 / 7</gadget>
<output>8</output>

<gadget id="calculator">160 / 8</gadget>
<output>20</output>

<result>20</result>