This only takes about 30 seconds. Work this out as you read.
DON'T CHEAT BY SCROLLING DOWN FIRST! :ق
Pick the number of days a week that you would like to eat out.
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Multiply this number by 2.
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Add 5.
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Multiply it by 50.
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If you have already had your birthday this year add 1749.
If you haven't, add 1748.
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Now subtract the four digit year that you were born.
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SEE BELOW
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You should now have a three digit number:
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The first digit of this was your original number
(i.e. how many times you want to go out each week).
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The second two digits are your age.
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This is the only year (1999) it will ever work, so spread the fun around while it lasts....