Prevent rounding errors in value calculation

core/lib/schemas/oanda_s.py

@@ -1,3 +1,5 @@
+from decimal import Decimal as D
+
 from pydantic import BaseModel
 
 
@@ -62,9 +64,9 @@ def parse_units(x):
 
 def parse_value(x):
     if float(x["long"]["units"]) > 0:
-        return float(x["long"]["units"]) * float(x["long"]["averagePrice"])
+        return D(x["long"]["units"]) * D(x["long"]["averagePrice"])
     elif float(x["short"]["units"]) > 0:
-        return float(x["short"]["units"]) * float(x["short"]["averagePrice"])
+        return D(x["short"]["units"]) * D(x["short"]["averagePrice"])
     else:
         return 0