Oscillation Frequencies...

I have an Astable 555 Timer set up as shown above. What is the value of \(R1\) (in \(k\Omega\)) to generate a pulse of 37.7 [Hz] with a pause of 0.0265 [s] per wave, given that the value of \(R2\) is 15 \(kΩ\) and the value of \(C1\) is 1 \(µF\)?

Give your answer to 1 d.p. Calculators ARE ALLOWED. If you want to challenge yourself don't use one!

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