Are these correct?
Please correct my answer if ever there is a mistake

1.) 3.8 x 22.25 =
8.4550
2.) 23 x 16.5 =
379.5
3.) 51.19 x 24.6 =
1,259.274
4.) 64 x 1.85 =
118.4
5.) 23.9 x 27.3 =
652.47​