The size of a cell is typically found by capturing an image under a microscope then using software to measure its diameter. Two cells are measured using this method:
Cell C: 9, point, 6, 7, times, 10, to the power minus 39.67×10 
−3
  centimeters
Cell D: 8, point, 1, times, 10, to the power minus 48.1×10 
−4
  centimeters
How many times larger is the diameter of cell C than the diameter of cell D? Write your answer in standard notation, rounding to the nearest tenth.