A block of iron with a volume of 9 cubic meters is forged into a cuboid iron block with a cross-section of 30 square decimeters. What is the length in decimeters?
一块体积为9立方米的铁块，锻成横截面为30平方分米的长方体铁块，长是多少分米．
<gadget id="calculator">1_000 / 30</gadget>
<output>100/3 = around 33.333333</output>

<gadget id="calculator">9 * (100/3)</gadget>
<output>300</output>

<result>300</result>