Each oil drum can hold up to 4.8 liters of oil, and to hold 70 liters of oil, how many such oil drums are needed?
每个油桶最多能装油4.8升，要装70升油，需要这样的油桶多少个？
<gadget id="calculator">14 + 1</gadget>
<output>15</output>

<result>15</result>