Sixty one millon forty four thousand eight hundes twelve in standard

Show me how you find the value of each variable and determine what the value of each variable is you i appreciate it : )

Asmall foreign car gete 42 miles per gallon and user 35 gallons on a trip.gasoline costs $1.05 per gallon.what was the cost of gasoline per mile driver?

Louis wants to carpet the rectangular floor of his basement the basement has an area of 864 square feet the width of the basement is 2/3 its length what is the length of lewis's basement