A parallelogram vegetable field has a base of 28.5 meters and a height of 12 meters. If 0.2 kg of fertilizer is applied per square meter, how many kg of fertilizer is applied to this land?
一块平行四边形菜地，底是28.5米，高是12米．如果每平方米施肥0.2千克，这块地共施肥多少千克？
<gadget id="calculator">28.5 * 12</gadget>
<output>342</output>

<gadget id="calculator">0.2 * 342</gadget>
<output>68.4</output>

<result>68.4</result>