No problem, we've got 9172 and 2116 to multiply
9172 × 2116 = 2116 × (9172)
+ 2116 × 2 what gives us 4232
+ 2116 × 70 what gives us 148120
+ 2116 × 100 that equals 211600
+ 2116 × 9000 what gives us 19044000

= 19407952
