Problem #PRU-116460

Problems Algebra and arithmetic Arithmetic operations. Number identities Set theory and logic Mathematical logic Puzzles
 10–11  2.0

Problem

Pinocchio correctly solved a problem, but stained his notebook. (∙∙+∙∙+1)×∙=∙∙∙

Under each blot lies the same number, which is not equal to zero. Find this number.