100x44x6x91x5x4x25=....
10044= 4400
44006= 26400
2640091=2402400
24024005= 12012000
120120004= 48048000
4804800025= 1201200000
Hope this helps!
100 x 44 x 6 x 91 x 5 x 4 x 25
= (4,400) x (546) x (20) x (25)
= (2,402,400) x (500)
= 1,201,200,000 .