hi im confused as to how they arrive at calculating 0.5/0.6 x 9000000 in the prior collected row. thank you

5 Allah expects to sell the following number of airplanes in each quarter next year 0/1 First quarter: 14 . Second quarter 19 Third quarter: 20 . Fourth quarter: 16 Each airplane sells for $1 million, of which 40% is collected in the quarter of sale, 50% in the quarter following sale, and 10% in the second quarter following the sale. Accounts receivable at the beginning of the first quarter is $10.200,000, of which $9,000,000 relates to the prior quarter and 51,200,000 relates to sales two quarters ago. Using these data, what is the computed amount of cash that Allah will collect in the second quarter of next year? O 57,600,000 O 516,100,000 Correct 513,200,000 Incorrect 523.000.000 The correct amount is calculated as follows 01 02 oa 94 Sales volume 14 19 20 16 Pro $1.000.000 $1.000.000 $5.000.000 51.000.000 $12.000.000 119,000,000 520.000.000 $76.000.000 Percent collected current 40x514000.000 55.600.000 400 519.000.000 - 57.600.000 10% Procollected in Current arter 0510659.000.000 $7.500.000 SON X 514.000.000 57.000.000 TWO quarters prior sale collected 0.100 19.000.000 51.500.000 Total 11