No problem, we've got 13012526 and 51941819 to multiply
13012526 × 51941819 = 51941819 × (13012526)
+ 51941819 × 6 that equals 311650914
+ 51941819 × 20 that results in 1038836380
+ 51941819 × 500 what gives us 25970909500
+ 51941819 × 2000 yielding 103883638000
+ 51941819 × 10000 which equals 519418190000
+ 51941819 × 000000 giving us 0
+ 51941819 × 3000000 that equals 155825457000000
+ 51941819 × 10000000 giving us 519418190000000

= 675894270224794
