There are 125 tons of yellow sand on the construction site, and the number of tons of gravel is 15 times that of the yellow sand. How many tons are there in total for the two building materials?
建筑工地有125吨黄沙，石子吨数是黄沙的15倍，两种建筑材料共有多少吨？
<gadget id="calculator">125 * 15</gadget>
<output>1_875</output>

<gadget id="calculator">1_875 + 125</gadget>
<output>2_000</output>

<result>2_000</result>