In a parallel circuit, the total resistance is defined as

$\displaystyle {R}{T}=\frac{{{R}{1}\cdot{R}{2}}}{{{R}{1}+{R}{2}}}$ where R1 and R2 are readings of two resistors.

Find the reading of resistor R1 where resistance of R2 is 0.821 ohms and the total resistance is 0.108 ohms.

Round your answer to the hundredths. No need to enter "ohms".