Here is what I get when I complete the search.
And here’s what I get when I intentionally change the units. Notice the color difference?
I don’t think that’s the issue, OP also changed from 1 to 2, so I believe they basically want to know the result of 2 * 1024 * 1024, but the issue is that the result is written in scientific notation.
When you search “megabytes to bytes” the units are correct and the number is one. If you edit the form, the number might not be one and the units might not be correct. Changing units highlights the unit input.
OP’s ostensible point posting on this community is that searching “megabytes to bytes” gave “mebibytes to bytes” in the calculator but OP’s image shows OP has changed the calculator.
What’s wrong? I find this a reasonable result. Most people looking for megabyte to bytes are actually looking for mebibytes, since the mega- prefix is literally just times a million but a lot of programs actually list mebibytes as “megabytes”.