A square steel billet with a side length of 5dm is forged into a steel bar with a cross-section of 50cm**2. What is the length of this steel bar?
一块棱长5dm的正方体钢坯，锻制成横切面是50cm**2的钢筋，这根钢筋长是多少？
<gadget id="calculator">5 * 10</gadget>
<output>50</output>

<gadget id="calculator">50 / 50 / 100</gadget>
<output>1/100 = around 0.01</output>

<gadget id="calculator">50 * 50 * (1/100)</gadget>
<output>25</output>

<result>25</result>