Xiaohua's family has a goldfish tank with a length of 40 cm, a width of 35 cm, and a height of 30 cm. The glass on the front and left side is damaged and needs to be remade. How many square centimeters of glass is needed?
小华家有一只长40厘米、宽35厘米、高30厘米的金鱼缸，前面和左面玻璃破损，需重新配制，共需玻璃多少平方厘米？
<gadget id="calculator">40 * 30</gadget>
<output>1_200</output>

<gadget id="calculator">35 * 30</gadget>
<output>1_050</output>

<gadget id="calculator">1_200 + 1_050</gadget>
<output>2_250</output>

<result>2_250</result>