The connecting rod workshop needs to forge a cuboid blank with a length of 26 decimeters, a width of 15 decimeters, and a height of 13 decimeters. If the raw material is a square billet with a side length of 10 decimeters, how long should it be?
连杆车间要锻造一个长26分米，宽15分米，高13分米的长方体毛坯，如果原料是横截面边长为10分米的正方形钢坯，需要截取多长的钢坯？
<gadget id="calculator">10 * 10</gadget>
<output>100</output>

<gadget id="calculator">13 / 100</gadget>
<output>13/100 = around 0.13</output>

<gadget id="calculator">26 * 15 * (13/100)</gadget>
<output>507/10 = around 50.7</output>

<result>507/10 = around 50.7</result>