Sharp el-2630piii Operation Manual page 43

 Because time calculation results are rounded down to 13
decimal places after sexagesimal-to-decimal conversion,
calculation errors may be introduced.
Time calculations are displayed in sexagesimal with the
fraction part of a second being rounded off.
 The sexagesimal arithmetic specifications of this printer
calculator are as follows:
Addition (Subtraction is similar to addition.)
(Sexagesimal) + (Sexagesimal) = (Sexagesimal)
(Sexagesimal) + (Decimal) = (Sexagesimal)
(Decimal) + (Sexagesimal) = (Sexagesimal)
Multiplication (Division is similar to multiplication.)
(Sexagesimal) (Sexagesimal) = (Decimal)
(Sexagesimal) (Decimal) = (Decimal)
(Decimal) (Sexagesimal) = (Decimal)
Caution!
The socket outlet shall be installed near the equipment and shall
be easily accessible.
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