No problem, we've got 19987346 and 9475815 to multiply
19987346 × 9475815 = 9475815 × (19987346)
+ 9475815 × 6 that results in 56854890
+ 9475815 × 40 what gives us 379032600
+ 9475815 × 300 giving us 2842744500
+ 9475815 × 7000 yielding 66330705000
+ 9475815 × 80000 yielding 758065200000
+ 9475815 × 900000 resulting in 8528233500000
+ 9475815 × 9000000 that equals 85282335000000
+ 9475815 × 10000000 that is equal 94758150000000

= 189396393036990
