Operator x is parsed as a unit

[s2u7]

Describe the bug
Noticed that x operator in area dimension is parsed as a unit. Is there a way to exclude certain characters from being parsed as units.

To Reproduce
Steps to reproduce the behavior:

import quantulum3
from quantumlum3 import parser
quants = parser.parse('18 1/4 x 4 1/4  Floor Edge')
quants[0].surface

Expected behavior
'18 1/4'
** Actual behavior**
'18 1/4 x'

Screenshots
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Additional information:

• Python Version: [3.8]
• Classifier activated/ sklearn installed: [yes?]
• OS: [Linus]
• Version [20.0.4]

Additional context
Add any other context about the problem here.

[nielstron]

Is there a way to exclude certain characters from being parsed as units.

No unfortunately there is currently no way to do this.

When trying to run this, I get the following output:

[Quantity(18.25, "Unit(name="dimensionless", entity=Entity("dimensionless"), uri=Dimensionless_quantity)"), Quantity(4.25, "Unit(name="dimensionless", entity=Entity("dimensionless"), uri=Dimensionless_quantity)")]

which seems right to me?