What’s the sums of 7.4 TiB, 231.33 GiB, 30191.01 MiB and 985256 KiB?

What time and date it would be (in same place) in 2 months, 6 weeks, 19 days, 2059 hours, 129 minutes and 21 seconds if it’s now 20XX-03-17 06:27:40, DST is in effect and will be ended tomorrow?

…I’ll skip on imperial units for my own sanity.

For first one, I’ll convert them all to bytes, calculate the sums and convert back to whatever unit I like. Compare that to calculating sums of them in SI prefix.

For second one… Um, anyone?