A barrel originally contained some gasoline. If 36.5 kilograms are poured in first, then 47.3 kilograms are poured out, exactly 100 kilograms are left; if 36.5 kilograms are poured out first, and then 47.3 kilograms are poured in, how many kilograms are left in the barrel?
一个油桶原来装有一些汽油，如果先倒入36.5千克，再倒出47.3千克，恰好剩100千克；如果先倒出36.5千克，再倒入47.3千克，桶里还剩多少千克？
<gadget id="calculator">47.3 - 36.5</gadget>
<output>10.8</output>

<gadget id="calculator">100 + 10.8</gadget>
<output>110.8</output>

<gadget id="calculator">110.8 - 36.5</gadget>
<output>74.3</output>

<gadget id="calculator">74.3 + 47.3</gadget>
<output>121.6</output>

<result>121.6</result>