How many kilometer/hour is 1 speed of sound?

1  speed of sound  =  1,234.80  kilometer/hour  2  speed of sound  =  2,469.60  kilometer/hour  3  speed of sound  =  3,704.40  kilometer/hour  4  speed of sound  =  4,939.20  kilometer/hour  5  speed of sound  =  6,174.00  kilometer/hour  6  speed of sound  =  7,408.80  kilometer/hour  7  speed of sound  =  8,643.60  kilometer/hour  8  speed of sound  =  9,878.40  kilometer/hour  9  speed of sound  =  11,113.20  kilometer/hour  10  speed of sound  =  12,348.00  kilometer/hour  11  speed of sound  =  13,582.80  kilometer/hour  12  speed of sound  =  14,817.60  kilometer/hour  13  speed of sound  =  16,052.40  kilometer/hour  14  speed of sound  =  17,287.20  kilometer/hour  15  speed of sound  =  18,522.00  kilometer/hour  16  speed of sound  =  19,756.80  kilometer/hour  17  speed of sound  =  20,991.60  kilometer/hour  18  speed of sound  =  22,226.40  kilometer/hour  19  speed of sound  =  23,461.20  kilometer/hour  20  speed of sound  =  24,696.00  kilometer/hour  21  speed of sound  =  25,930.80  kilometer/hour  22  speed of sound  =  27,165.60  kilometer/hour  23  speed of sound  =  28,400.40  kilometer/hour  24  speed of sound  =  29,635.20  kilometer/hour  25  speed of sound  =  30,870.00  kilometer/hour  26  speed of sound  =  32,104.80  kilometer/hour  27  speed of sound  =  33,339.60  kilometer/hour  28  speed of sound  =  34,574.40  kilometer/hour  29  speed of sound  =  35,809.20  kilometer/hour  30  speed of sound  =  37,044.00  kilometer/hour  31  speed of sound  =  38,278.80  kilometer/hour  32  speed of sound  =  39,513.60  kilometer/hour  33  speed of sound  =  40,748.40  kilometer/hour  34  speed of sound  =  41,983.20  kilometer/hour  35  speed of sound  =  43,218.00  kilometer/hour  36  speed of sound  =  44,452.80  kilometer/hour  37  speed of sound  =  45,687.60  kilometer/hour  38  speed of sound  =  46,922.40  kilometer/hour  39  speed of sound  =  48,157.20  kilometer/hour  40  speed of sound  =  49,392.00  kilometer/hour  41  speed of sound  =  50,626.80  kilometer/hour  42  speed of sound  =  51,861.60  kilometer/hour  43  speed of sound  =  53,096.40  kilometer/hour  44  speed of sound  =  54,331.20  kilometer/hour  45  speed of sound  =  55,566.00  kilometer/hour  46  speed of sound  =  56,800.80  kilometer/hour  47  speed of sound  =  58,035.60  kilometer/hour  48  speed of sound  =  59,270.40  kilometer/hour  49  speed of sound  =  60,505.20  kilometer/hour  50  speed of sound  =  61,740.00  kilometer/hour 
