Jiupu Experimental Primary School newly bought 45 sets of single-person desks and chairs, each desk is 128 yuan, and each chair is 72 yuan. How much did you spend in total?
旧铺实验小学新买来45套单人课桌椅，每张课桌128元，每把椅子72元，一共用了多少元？
<gadget id="calculator">128 + 72</gadget>
<output>200</output>

<gadget id="calculator">200 * 45</gadget>
<output>9_000</output>

<result>9_000</result>