If Lito continues with his efforts, he will make more hangers than Ariel in ten days. If you multiplied the two end numbers (24.6 and 42) by 10, you will see Lito skyrocketing ahead of Ariel.
The punctuation mark that is not used internally in a sentence is a period (.). Periods are only used when ending a sentence therefore, it should only put at the end. Periods signal that the sentence has already ended and no continuation needed.