piece of steel is 2 meters long, and its cross-section is a square with a side length of 4 cm. If it is to be forged into a rectangular steel with a cross-sectional area of 25 square centimeters, how long is it in meters?
一块钢材长2米，横截面是边长4厘米的正方形，如果要把它锻造成横截面面积是25平方厘米的长方形钢材，长是多少米？
<gadget id="calculator">100 / 25 / 100</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">4 * 4 * 2 * (1/25)</gadget>
<output>32/25 = around 1.28</output>

<result>32/25 = around 1.28</result>