A slide rule for multiplication and division

flag, deformed hands and fingers, uneven teeth, bad eyes, unmatched eyes, squint, deformed legs and arms, deformed face, beard, pout, sulk dark areas, bad anatomy, extra legs, extra arms, poorly drawn face, poorly drawn hands, poorly drawn feet, fat, disfigured, out of frame, long neck, poor art, bad art, watermark, ugly, tiling, poorly drawn hands, poorly drawn feet, poorly drawn face, extra limbs, disfigured, deformed, body out of frame, bad anatomy, US flag