There are 45 pairs of badminton rackets in the sports room. There are more table tennis rackets than badminton rackets (4/9). How many pairs of table tennis rackets are there?
体育室有45副羽毛球拍，乒乓球拍比羽毛球拍多(4/9)，乒乓球拍有多少副？
<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">45 * (4/9)</gadget>
<output>20</output>

<gadget id="calculator">45 + 20</gadget>
<output>65</output>

<result>65</result>