1×1×2×2×23×221+1=1234÷123​

Penjelasan dengan langkah-langkah:

1×1=1

1×2=2

2×2=4

4×23=92

92×221=1989

1989+1=1990

___________ +

4178

1234 : 123 =10,0325203

4178

____________________+

4.188,03252