descompones los numeros asi
16824 = (10,000+6,000+800+20+4)
14700 = (10,000+4,000+700)
ahora multiplicamos
10,000x10,000 = 100,000,000
10,000x4,000 = 40,000,000
10,000x700 = 7,000,000
6,000x10,000 = 60,000,000
6,000x4,000 = 24,000,000
6,000x700 = 4,200,000
800x10,000 = 8,000,000
800x4,000 = 3,200,000
800x700 = 560,000
20X10,000 = 200,000
20X4,000 = 80,000
20X700 = 14,000
4X10,000 = 40,000
4X4,000 = 16,000
4X700 = 2,800
se suma los resultados 247,312,800
16,824 x 14,700 = 247,312,800