The kitchen burned 13 kilograms of coal in 10 days. According to this calculation, how many kilograms of coal will be needed to burn it for 100 days.
伙房10天烧了13千克煤，照这样计算，烧100天，需要多少千克煤．
<gadget id="calculator">13 / 10</gadget>
<output>13/10 = around 1.3</output>

<gadget id="calculator">(13/10) * 100</gadget>
<output>130</output>

<result>130</result>