2019万 2019000 2091万 201900000
> > >
24×5= 320×20= 40×500= 37亿+73亿=
120×4= 21×499≈ 5×6÷5×6= 7万+530000=
2×5=10
22×55=1210
222×555=123210
2222×5555= 12343210
22222×55555=1234543210
×=12345676543210