question: Robyn sends sixteen emails a day. Seven are work emails, and two-thirds of the remainder are to family. One-third of the other emails are to her boyfriend. How many emails a day does she send to her boyfriend?
answer: Robyn sends 16 - 7 = <<16-7=9>>9 non-work emails.
  She sends 9 * 2 / 3 = <<9*2/3=6>>6 emails to family.
  There are 9 - 6 = <<9-6=3>>3 emails remaining.
  Of the remaining 3, 1/3 are to her boyfriend, so Robyn sends him 3 * 1 / 3 = <<3*1/3=1>>1 email a day.
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