No problem, we've got 7870 and 6120 to multiply
7870 × 6120 = 6120 × (7870)
+ 6120 × 0 that is equal 0
+ 6120 × 70 what gives us 428400
+ 6120 × 800 what gives us 4896000
+ 6120 × 7000 yielding 42840000

= 48164400
