Use 70dm long iron wire to form a rectangle. The ratio of the length to width of the rectangle is 4:3. What is the area of the rectangle in square meters?
用70dm长的铁丝围成一个长方形，长方形长和宽的比是4：3，这个长方形的面积是多少平方米？
<gadget id="calculator">70 / 10 / 2</gadget>
<output>7/2 = around 3.5</output>

<gadget id="calculator">4 + 3</gadget>
<output>7</output>

<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>

<gadget id="calculator">(7/2) * (4/7) * (7/2) * (3/7)</gadget>
<output>3</output>

<result>3</result>