A conference room is 6.2 meters long and 4.5 meters wide, with floor tiles of 0.09 square meters each. If the price of each floor tile is 4.2 yuan, how much is the minimum cost to buy floor tiles?
一间会议室长为6.2米，宽为4.5米，用每块0.09平方米的地砖辅地．如果每块地砖的价格是4.2元，那么买地砖至少要用多少元？
<gadget id="calculator">4.5 / 0.09</gadget>
<output>50</output>

<gadget id="calculator">6.2 * 50 * 4.2</gadget>
<output>1_302</output>

<result>1_302</result>