As a number it is: 830,000,000
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It is: 8.3*108
68.83
830 would not normally need be written in scientific notation. However, it would be 8.3x102
30% of 830= 30% * 830= 0.3 * 830= 249
60 percent of 830 dollars = $49860% of $830= 60% * $830= 60%/100% * $830= $498