670 is ten times bigger than 67.
670 is 6.7 times larger than 100.
5 ]
1 x 670, 2 x 335, 5 x 134, 10 x 67 = 670
You can calculate 3444 times 670 without rounding or you can estimate it WITH rounding. But you cannot estimate it without rounding.
935
67 times exactly !
The ISBN of "Spycatcher" by Peter Wright is 0-670-82055-5.
1 + 2 + 5 + 10 + 67 + 134 + 335 + 670 = 1,224
671.641791 times
8 times with a remainder of 70
6 times remainder 70