GAFFNEY, S.C. -- A single mother's Facebook post about how she plans to use her tax return to provide for her kids has gone viral.Christina Knaack, a single mom making minimum wage to support her two young children, posted a picture of a $5,400 tax return receipt, along with some inspiring words about her plans for the money."Instead of buying my kids the latest Jordans or fancy electronics I paid my rent for the YEAR. I'm a single mom and I do it all buy myself on a minimum wage job. I kno that a roof over my kids head is what's important." Knacck wrote.The post has more than 43,000 comments, most of them positive.Knaack told FOX Carolina she is a single mother raising a 4-month-old and 2-year-old."It's pretty crazy," she said. "I was just sharing a milestone with my friends and family."