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270 times 450 divided by 30

270 times 450 divided by 30

270×450÷30
=270÷30×450
=90×450
=4050

19 times 15 divided by 19 times 15 simple calculation how to write? Quickly! Thank you

15×19÷15×19
＝15÷15×19×19
＝1×19×19
＝19×(20－1)
＝19×20－19×1
＝380－19
＝361

225 divided by 15 times 8 (simple calculation)

225÷15×8 =225×8÷5÷3 =1800÷5÷3 =120

(4 / 3-1 / 5 * 1 / 4) divided by 4 / 15 is easy to calculate
emergency

=4 / 3 ／ 4 / 15-1 / 20 ／ 4 / 15
=3 / 5-16
=4 and 13 / 16