Text Area calculation

[k005]

How can I print the area of the text objects (**x**) in the texts I have given in the example?

Existing list ( text object)

PZ01 (150/25)
SZ12 (60/40)
PZ03 (180/30)
.....
.....

wanted list
0.375 m²
0.24 m²
0.54 m²
.....
.....

SZ01 (30/60)
SZ04 (60/35)
SZ02 (35/60)
SZ03 (30/60)
SZ06 (40/70)
SZ05 (60/40)
PZ02 (255/25)
SZ08 (80/30)
SZ07 (60/30)
SZ11 (60/30)
SZ10 (40/60)
SZ13 (40/90)
SZ09 (40/65)
SZ16 (40/60)
SZ17 (40/60)
SZ15 (40/60)
SZ14 (30/60)
PZ05 (25/180)
PZ04 (25/150)
PZ01 (150/25)
SZ12 (60/40)
PZ03 (180/30)

[k005]

@pbejse 

My friend;

The content of these will not change, and we will print the sum of square meters of all of them as a separate article. So total.