840 = 23 x 31 x 51 x 71
840 = 2 x 2 x 2 x 3 x 5 x 7
The longest factor string for 840 is its prime factorization because prime factors can't be broken down any further.
5040
2 x 2 x 2 x 3 x 5 x 7 = 840
2 x 2 x 2 x 3 x 5 x 7
840
840
Find one factor, divide by it to get the other factor. Continue separating each of the factors into smaller factors, until you only have prime numbers. For example, 840 = 2 x 420. Now continue finding smaller factors for 420.
15 percent of 840 = 12615% of 840= 15% * 840= 0.15 * 840= 126
99% of 840= 99% * 840= 0.99 * 840= 831.6
15 percent of 840 = 12615% of 840= 15% * 840= 0.15 * 840= 126