In a bar chart, 0.8 cm is used to represent 200 tons. To represent the quantity of 750 tons, how many centimeters should the bar be drawn.
在一幅条形统计图中，用0.8厘米表示200吨，要表示750吨的数量，直条应当画多少厘米．
<gadget id="calculator">750 / 200</gadget>
<output>15/4 = around 3.75</output>

<gadget id="calculator">(15/4) * 0.8</gadget>
<output>3</output>

<result>3</result>