There are an infinite amount of numbers you can multiply to obtain 840 as the product.
5040
5880
2520
3360
you can multiply 281 and 3 you can add 840 and 3
840
781
They are: 2*4*3*5*7 = 840
To convert 840 to percent multiply by 100:840 × 100 = 84,000 %
you could multiply 84 by 10 = 840 then multiply 84 by 2 = 168 add these two numbers = 1008
420 and 840