The unit price of school uniforms in Xingguang Primary School is 138 yuan. Class 4 and 1 bought 52 sets of such school uniforms. How much did they cost in total?
星光小学的校服单价是138元，四1班买了52套这样的校服，一共用去多少元？
<gadget id="calculator">52 * 138</gadget>
<output>7_176</output>

<result>7_176</result>