A square steel plate has a side length of 8 cm. If the steel plate weighs 980 kg per square decimeter, how much does the steel plate weigh?
一块正方形钢板，边长8厘米，如果每平方分米的钢板重980千克，这块钢板重多少千克？
<gadget id="calculator">8 / 10</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(4/5) * (4/5) * 980</gadget>
<output>3_136/5 = around 627.2</output>

<result>3_136/5 = around 627.2</result>