A truck transports (23/16) tons of watermelons for the first time, and (1/4) tons less for the second time than the first time. How many tons of watermelons are transported twice?
一辆货车第一次运(23/16)吨的西瓜，第二次比第一次少运(1/4)吨．两次共运西瓜多少吨？
<gadget id="calculator">23 / 16</gadget>
<output>23/16 = around 1.4375</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(23/16) - (1/4)</gadget>
<output>19/16 = around 1.1875</output>

<gadget id="calculator">(19/16) + (23/16)</gadget>
<output>21/8 = around 2.625</output>

<result>21/8 = around 2.625</result>