Megan is going to make a drink using the instructions below.
| Mix 2 parts of fruit juice with 5 parts of sparkling water |
Megan has 180 ml of fruit juice and k k\,k ml of sparkling water, where 0<k<4500<k<4500<k<450.
What is the greatest amount of the drink Megan can make, in terms of kkk?
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