If the physical education teacher goes to the store to buy 6 footballs and 3 basketballs, he will pay 294 yuan; how much will he pay for 10 footballs and 5 basketballs?
体育老师到商店买6个足球和3个篮球，要付294元；则买10个足球和5个篮球要付多少元．
<gadget id="calculator">294 / 3</gadget>
<output>98</output>

<gadget id="calculator">98 * 5</gadget>
<output>490</output>

<result>490</result>