A section of steel is 15 decimeters long and has a cross-sectional area of 1.2 square decimeters. If it is calcined into a steel bar with a cross-sectional area of 0.1 square decimeter, find the length of this steel bar.
一段钢材长15分米，横截面面积是1.2平方分米．如果把它煅烧成一横截面面积是0.1平方分米的钢筋，求这根钢筋的长．
<gadget id="calculator">15 / 0.1</gadget>
<output>150</output>

<gadget id="calculator">1.2 * 150</gadget>
<output>180</output>

<result>180</result>