Summary:
The error message that appears when a user enters an amount greater than 12,000 USD to donate has a rounding error that causes the MYR conversion to appear as 49800.00000000001 MYR.

Steps to Reproduce:

1. Open https://en.wikipedia.org/wiki/wikipedia?banner=B1920_0301_mlWW_dsk_p1_lg_cnt&country=MY
2. Select "Other" in the "Select an amount" section of the banner and enter "444444" into the "Other" field
3. Observe error message that appears at the bottom includes a rounding error

Expected Results:
We would expect the error message to not include such a large number of decimal places.

Actual Results:
Error message currently displays 10 decimal places in Malaysia