14?15?42 = 99?3?28 How do I find the answer

Question

I don't know how to solve this sort of puzzle - please help ..

Answer 1

14*15/42=5

99/3-28=5

Answer 2

57:68:65:6e:20:74:68:65:20:73:75:6e:20:64:69:65:73:2c:20:61:6e:64:20:6d:6f:6f:6e:20:69:73:20:6e:6f:20:6c:6f:6e:67:65:72:20:68:65:72:65:1f:54:68:65:79:20:77:69:6c:6c:20:72:69:73:65:2c:20:74:68:65:79:20:77:69:6c:6c:20:72:69:73:65:2c:20:74:68:65:79:20:77:69:6c:6c:20:72:69:73:65:1f:59:6f:75:72:20:73:69:6e:73:20:77:69:6c:6c:20:62:65:20:77:61:73:68:65:64:20:61:77:61:79:1f:41:6e:64:20:66:61:67:67:6f:74:73:20:6c:69:6b:65:20:4f:50:20:77:69:6c:6c:20:64:69:65

Answer 3

This website is fake, anyone can post on it. Don't get taken off track. Look a little deeper- 4048