29 (29.4516) times.
The product of 913 multiplied by 10,000 is 9,130,000
913
11 times 83
228.25 times. haha
913 -426 Since the 6 is larger than the 3 and the 2 is larger than the 1, you will have to regroup two times.
1339
I would suggest 330 so that 335*29 is estimated by 330 * 30 = 9900.
913
913 is evenly divisible by 1, 11, 83 and 913.
1, 11, 83, 913
913 - 426 = 487