The total amount of money that Florence received is 3*300 = $<<3*300=900>>900, three times as much money as Rene received.
Maria gave Isha half the amount of money that Florence received, which is $900/2 = $<<900/2=450>>450
Maria gave her friends $450+$900+$300 = $<<450+900+300=1650>>1650
#### 1650