Calculator, Put your formula

Natural logarithm
Common logarithm
Power
Parentheses

No memory function

--calculation priority--
It gives priority to formulas that are in deeper level of parentheses.
In a formula, order of calculation is...natural logarithm-common logarithm > power > multiplication-division > addition
A subtraction will be regarded as a addition of negative numbers

If there were same multiple operators, it calculates from left to right.