I am using MongoDB v4.4.
In my Inventory collection, I have a field OnhandQty with Number type.

The current value in the document is:
OnhandQty = 9138.8

When I run the update query:
db.Inventory.updateOne(
  { _id: ... },
  { $inc:

}
);

Expected result:
OnhandQty = 4154

Actual result:
OnhandQty = 4153.9999999999

Issue:
The result shows a floating-point precision error instead of the exact expected value. This is critical in use cases such as inventory and financial data where exact decimal precision is required.

Additional notes:

• Field type: Number (double precision)
• MongoDB server version: 4.4