HP 50g User Manual page 156

which shows as 65_(m yd). To convert to units of the SI system, use function
UBASE:
Note: Recall that the ANS(1) variable is available through the keystroke
combination „î(associated with the ` key).
To calculate a division, say, 3250 mi / 50 h, enter it as (3250_mi)/(50_h)
`:
which transformed to SI units, with function UBASE, produces:
Addition and subtraction can be performed, in ALG mode, without using
parentheses, e.g., 5 m + 3200 mm, can be entered simply as 5_m + 3200_mm
`:
More complicated expression require the use of parentheses, e.g.,
(12_mm)*(1_cm^2)/(2_s) `:
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