It is: 1.4*360 = 504
1 x 2 x 252 = 504
2 and 252 multiplied together equals 504. I wouldn't say that they "multiplied add up to", however, because it could be confusing whether you are talking about multiplication or addition.
504
504 x 504
998 + 504 + 504 + 504 = 2510
504 of course !
504 = 8 x 9 x 7
14 multiplied by 36 is 504
24 multiplied by 21 is 504.
168 x 3 = 504
456