The traffic on the mother's mobile phone is 92.8m, and 34.5m has been used. How much traffic is left?
妈妈手机上的流量为92.8m，用去了34.5m，还剩下多少流量？
<gadget id="calculator">92.8 - 34.5</gadget>
<output>58.3</output>

<result>58.3</result>