Xiao Pang's family bought a bundle of wires. It is 50 meters long, and after using it twice, there is still 7.45 meters left. It is recorded that 18.48 meters were used for the second time. How many meters were used for the first time?
小胖家买了一捆电线．长50米，用了两次后还剩下7.45米，据记录第二次用去18.48米，问第一次用去多少米？
<gadget id="calculator">50 - 18.48 - 7.45</gadget>
<output>24.07</output>

<result>24.07</result>