Template variables can be used inside this template variable as per the examples <span style="color: #019cde">comparison in blue</span>, <span style="color: #75d5ad">positive result in green</span>, <span style="color: #fe746c">negative result in red</span>:
<span style="color: #f3e504; font-size: 150%;" >{{#fas:lightbulb}} </span> Property Template 1-8 and Room Template 1-8 can be used to set calculations. If using Room Templates to make a calculation, then use Room Template 8 before Room Template 7. i.e if you want to see the value 10, you could set Room template 6 = [ROOMTEMPLATE7][+][ROOMTEMPLATE8] and enter 4 in Room template 7 and 6 in Room template 8. The result would be 10.
You can set a calculation in Room Templates to show in Property Templates, but not the other way around. So "Property Template1" could pull the calculation of [ROOMTEMPLATE6] and the result = 10.