According to primary school mathematics, we can easily get the result: 780/26=30.

Division has two meanings: divide a number (something) into several parts evenly and find out how much each part is; Calculated by division, total number ÷ number of copies = number of copies: divide a number into several parts, and divide it into several parts as evenly as possible; Calculated by division, total ÷ each copy = number of copies.