RM7800 at 9.25% for 4months.

1 answer

as always,
i = Prt
or
A = P(1+r/n)^(n*t)
so you can use your numbers to start with that.
since you are hiding whether you want simple or compound interest.

Remember: It's not my job to figure out what you mean.
It's your job to say it so clearly you cannot be misunderstood.