Now playing: Another graphical multiplication trick - do it with circles!
Do you feel lucky?
118011791178117711761175117411731172117111701169
116811671166116511641163116211611160115911581157
115611551154115311521151115011491148114711461145
114411431142114111401139113811371136113511341133
Want more? Play clip 1180 >>
See for yourself...



