human
Sara sent letters to her friend in China every month. She sent 6 letters in January, 9 letters in February, and in March she sent triple the number of letters she sent in January. How many letters does Sara send?
assistant
How many letters did Sara send in January and February? ** Combining January and February, Sara sent 6 + 9 = <<6+9=15>>15 letters.
How many letters did Sara send in March? ** In March, she sent 3 * 6 = <<3*6=18>>18 letters.
How many letters did Sara send in total? ** Altogether, Sara sent 15 + 18 = <<15+18=33>>33 letters.
#### 33