A tomato plant has 100 tomatoes. Jane picks 1/4 of that number for use in their house. After a week, she goes back and picks 20 more tomatoes, and the following week picks twice that number. What's the total number of fruits remaining on the tomato plant?
When she picks 1/4 of the number of tomatoes, she goes home with 1/4*100 = 
<gadget id="calculator">1/4*100</gadget>
<output>25</output>
25 tomatoes.
The total number of tomatoes remaining will be 100-25 = 
<gadget id="calculator">100-25</gadget>
<output>75</output>
75 tomatoes.
After picking 20 more tomatoes the following week, the number of tomatoes remaining is 75-20 = 
<gadget id="calculator">75-20</gadget>
<output>55</output>
55 tomatoes.
The next week she picks twice the number she picked the previous week, that is 20*2 = 
<gadget id="calculator">20*2</gadget>
<output>40</output>
40 tomatoes.
The total number of tomatoes remaining after the final picking is 55-40 = 
<gadget id="calculator">55-40</gadget>
<output>15</output>
15 tomatoes.

<result>15</result>