Wektu nyong lagi sinau matematika ning ruang tamu witoro bar sholat Isya, Bapake nyong pirso banjur menehi tulisan ning bukune nyong :Tulisane koyo kiye :23.465 X 99.999 = .... 1+2+3+4+5+......+99+100 =...1 - 2 - 3 + 4 +5 - 6 - 7 + 8 + 9 - ... -99 + 100 = ....Bapake nyong menehi