There is a piece of iron with a length of 14 cm, a width of 9.8 cm, and a height of 3 cm, which is submerged in a rectangular oil tank. After taking out the iron block, the height of the oil dropped by 1.2 cm. What is the area of the bottom of this cuboid fuel tank?
有一块长14厘米，宽9.8厘米，高3厘米的铁块，浸没在一个长方形的油箱中．取出铁块后，油的高度下降了1.2厘米．这个长方体油箱的底面积是多少平方厘米？
<gadget id="calculator">3 / 1.2</gadget>
<output>2.5</output>

<gadget id="calculator">14 * 9.8 * 2.5</gadget>
<output>343</output>

<result>343</result>