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descompune intr-o suma de produse:7.805,96.040,502.136

Răspuns :

7805=7x1000+8x100+0x10+5x1
96040=9x1000+6x100+0x10+4x1+0x1

7.805=1000X7+100X8+1X5
96.040=10.000 X9  + 1000  X  6  +10 X 4 
502. 136= 100.000 X 5 + 1000 X 2  . 100 X 1 +   10 X 3 + 1 X6