A bottle of oil weighs 3.4 kilograms, and the bottle weighs 0.5 kilograms. After 1.52 kilograms of oil are used, how many kilograms of oil are left?
一瓶油连瓶重3.4千克，瓶重0.5千克，用去1.52千克油后，还剩下多少千克油？
<gadget id="calculator">3.4 - 0.5 - 1.52</gadget>
<output>1.38</output>

<result>1.38</result>