Allison, a YouTuber, uploads 10 one-hour videos of food reviews each day to her channel. She uploaded videos halfway through June,  at that pace,  and then doubled the number of video hours she uploaded on the remaining days. What's the total number of video hours she has uploaded at the end of the month?
Since June has 30 days, halfway is 1/2*30 = 
<gadget id="calculator">1/2*30</gadget>
<output>15</output>
15.
The total number of video hours halfway through June is 10*15 = 
<gadget id="calculator">10*15</gadget>
<output>150</output>
150.
When she doubled the number of video hours, the total per day became 10*2 = 
<gadget id="calculator">10*2</gadget>
<output>20</output>
20.
The total number of video hours for the remaining days is 15*20 = 
<gadget id="calculator">15*20</gadget>
<output>300</output>
300.
The total number of video hours for the whole month is 300+150 = 
<gadget id="calculator">300+150</gadget>
<output>450</output>
450.

<result>450</result>