(1 + 1 / 2) times (1 + 1 / 4) times (1 + 1 / 6) Multiply by (1 + 1 / 2008) multiply by (1-3 / 2008) multiply by (1-5 / 2008) (1 + 1 / 2) times (1 + 1 / 4) times (1 + 1 / 6) By (1 + 1 / 2008) by (1-3 / 2008) by (1-5 / 2008) by (1-1 / 2007)
One in 2008
9999 times 7 plus 1111 times 37
=9×1111×7+1111×37
=1111×(37+7×9)
=1111×100
=111100
9999 times 7 + 1111 times 37 is equal to several (simple operation) process
10000*7+1000*37+100*37+10*37+37=