Chen Hong collected 37 sets of stamps, and after giving one set to her sister, the remaining ones were exactly 1.5 times the number of stamps set by Zhang Hua. How many sets of stamps did Zhang Hua collect?
陈红收藏邮票37套，送给妹妹一套后，剩下的恰好是张华邮票套数的1.5倍，张华收藏邮票多少套？
<gadget id="calculator">37 - 1</gadget>
<output>36</output>

<gadget id="calculator">36 / 1.5</gadget>
<output>24</output>

<result>24</result>