Xiao Ming has 3,000 yuan in New Year's money, and he plans to spend 10% of it on gifts for his parents and 15% of it on gifts for his grandparents. How much did Xiao Ming spend on gifts?
小明有3000元压岁钱，打算把其中的10%给爸爸妈妈买礼物，把其中的15%给爷爷奶奶买礼物，小明买礼物一共花了多少钱？
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">(1/10) + (3/20)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">3_000 * (1/4)</gadget>
<output>750</output>

<result>750</result>