Apple and peach trees are planted in the orchard of the Grange Poser farm. The orchard has 30 apple trees that each give 150 kg of apples and 45 peach trees that each produce an average of 65 kg of fruit. What is the total mass of fruit harvested in this orchard?
Let's first calculate what the apple trees produce: 30 trees * 150 kg/tree = 
<gadget id="calculator">30*150</gadget>
<output>4_500</output>
4500 kg.
Then let's calculate what the peaches produce: 45 trees * 65 kg/tree = 
<gadget id="calculator">45*65</gadget>
<output>2_925</output>
2925 kg.
We add these two masses: 4500 kg + 2925 kg = 
<gadget id="calculator">4500+2925</gadget>
<output>7_425</output>
7425 kg.

<result>7_425</result>