There are 286 boys in Hope Primary School, 147 more than girls. How many boys and girls are there in Hope Primary School?
希望小学有男生286人，比女生多147人，希望小学男女生共有多少人？
<gadget id="calculator">286 - 147</gadget>
<output>139</output>

<gadget id="calculator">286 + 139</gadget>
<output>425</output>

<result>425</result>