Use 5 kg of flour to make steamed buns, and use (1/8) kg of flour for each steamed bun. Give (3/10) of these steamed buns to grandma. How many steamed buns to give grandma?
用5千克面粉做馒头，每个馒头用(1/8)千克面粉．把这些馒头的(3/10)送给奶奶．送给奶奶多少个馒头？
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">5 / (1/8)</gadget>
<output>40</output>

<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">40 * (3/10)</gadget>
<output>12</output>

<result>12</result>