4.249 x 10^7 / (2.268 x 10^5 x 6.26 x 10^-14)
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Do the math and solve first, and your answer will be 2.99274247 x 10^15
Look for the number with the smallest number of significant figures, which in this case is 6.26 x 10^-14, which has three significant figures
Round to three significant figures in your answer and get 2.99 x 10^15
***When I say round to three sig figs, I mean for example, if your answer was 2.997 x 10^15, your answer would round to 3.00 x 10^15 because the 7 would round the 9 up to a 10, which would round up the other 9, which would make your number 3. But since you need 3 sig figs, you'd make the number 3.00 x 10^15***
Look for the number with the smallest number of significant figures, which in this case is 6.26 x 10^-14, which has three significant figures
Round to three significant figures in your answer and get 2.99 x 10^15
***When I say round to three sig figs, I mean for example, if your answer was 2.997 x 10^15, your answer would round to 3.00 x 10^15 because the 7 would round the 9 up to a 10, which would round up the other 9, which would make your number 3. But since you need 3 sig figs, you'd make the number 3.00 x 10^15***