Instacalc vs Wolfram Alpha

Wolram Alpha is the gold standard for unit processing and calculations, and an inspiration. Even still, it sometimes doesn't do what I mean. Here's a few examples that Instacalc handles but Wolfram Alpha doesn't.

https://instacalc.com/57433

30 miles per gallon in cents per mile at $3/gallon        = 10 cents/mile
30 miles per gallon in dollars per mile at $3/gallon      = 0.1 dollars/mile
200 miles at 300wh/mile with $.17/kwh                     = $10.20

200 miles / (sept 1 - jun 1)                              = 2.1739 miles/day
2tb/46minute in MBps                                      = 796.7476 MBps

.600kg = 23 bhd                                           = 38.3333 BHD/kg

$.27 per watt in dollars per 400w                         = 108 dollars/400 w
274 watt-hours per mile in mpge                           = 122.9927 MPGe

in to cm                                                  = 2.54 cm
foot to cm                                                = 30.48 cm

15 sales/day in minutes per sale                          = 96 minutes/sale
g=9.8 m/s^2; t=10 seconds; 1/2 g t^2                      = 490 m

3 3/8" / 12                                               = 9/32"

hex(1kb)                                                  = 0x0400
1kb in hex                                                = 0x0400
2,356,230 MIPS at 4.35 Ghz                                = 541.6621 instructions/cycle

15' / 1/2"                                                = 360
2 weeks = 5 eggs                                          = 2.5 eggs/week
2 hours = 120 miles                                       = 60 miles/hour
15 mbps in hours until 100 GB                             = 15 mbps
15 mph in hours until 100 miles                           = 6.6667 hours/100 miles

15 mah * 1.5v                                             = 81 joule
(1500 mah * 1.5v) in watt hours                           = 2.25 watt hours

200 miles / (mar 1 - mar 25)                              = 8.3333 miles/day
15 L/hr in /day                                           = 360 L/day

15 feet in cm + 10 inches in cm                           = 482.6 cm
$25/hour in hours until $2000                             = 80 hours/2000 USD