Whenever you see zeroes at the ends you just take them away and multiply the other numbers and put the zeroes back.
Like in 70 x 1400 got 1 zero of 70 and 2 zeroes of 1400 so you get 1+2 = 3 zeroes. [ 000 ] *In my storage*
Then you solve 7 x 14 = 98 and put the 3 zeroes i had in my memory.
So
70 * 1400 = 98000
How about: 2*700 = 1400
70% of 1400 = 1400*70/100 = 980
70 x 20 = 1400
70
70
70*10000=700000
To be exact: 35/3 times 6 = 70
3.5 x 20= 70
50 x 70 = 3,500
4.666666667
7 times 70= 490
70 times 28 equals 1,960.