Disclosed is a method of modular multiplication of two L-bit numbers, the result defined from XY+mM, where M is the modulo, of L bits, and m is a number of L bits found and is divisible by 2L. Also disclosed is a method of preparing such a kava-kava lactone-containing product by extracting kava-kava lactones from crude kava-kava extracts with a solubilizing agent. The first heating zone is operable alone with the first cyclic energy controller controlling power of the first heating element at selected settings between a maximum duty cycle and a minimum duty cycle. Also disclosed is a clump-inhibited aggregate material that comprises an aggregate of units of a material in combination with an anti-icing material as heretofore described. The process is based in part on the use of a base-promoted dynamic epimerization of a chiral nitro center. Within a time period of activation of the shutter glasses, the shutter glasses show a transmittance in a first time interval smaller than a transmittance in a second time interval.