Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> dd0974f974b7ae0e785d02e9d68e9ef90615f82ba1af025e5541a3391908d9ba:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^