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Multiplying: 3 digit numbers with hints [2]

Multiplying: 3 digit numbers with hints [2]

 
 
487
997 ×
7 × 7 = 49
7 × 80 = 560
7 × 400 = 2800
90 × 7 =
630
90 × 80 =
7200
90 × 400 =
36000
900 × 7 =
6300
900 × 80 =
72000
900 × 400 =
+ 360000
485539